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Enka Insaat Ve Sanayi AS v OOO Insurance Company Chubb, [2020] UKSC 38

Title
Enka Insaat Ve Sanayi AS v OOO Insurance Company Chubb, [2020] UKSC 38
Table of Contents
JUDGMENTEnka Insaat Ve Sanayi AS (Respondent) v OOO Insurance Company Chubb (Appellant)JUDGMENT GIVEN ON9 October 2020LORD HAMBLEN AND LORD LEGGATT: (with whom Lord Kerr agrees)I. IntroductionII. Factual background(i) The construction contract(ii) The Russian proceedings(iii) The English proceedings(iv) The arbitration proceedings(v) This appealIII. The English conflict of laws rules(i) The Rome I Regulation(ii) The common law rules(iii) Party choice(v) Express or implied choice(vi) The default rule(vii) Splitting the contractIV. Choice of law for the whole contract(i) Significance of a governing law clause(ii) Domestic case law(iii) Considerations of principle(iv) The international perspectiveV. The approach of the Court of Appeal(i) The Court of Appeal’s judgment(ii) Separability(iv) Choice of curial law(v) Relationship between curial law and arbitration agreement law(vi) Section 4(5) of the 1996 Act(vii) Enka’s case on section 4(5)VI. Avoiding invalidity(i) The validation principle(iii) The decision in Sulamérica(iv) Commercial purpose of an arbitration clauseVII. Relevance of the arbitration seat to the main contract lawVIII Applying the closest connection test(i) The place of performance(ii) Consistency with international law and legislative policy(iii) Giving effect to commercial purpose(v) Conclusion on the default ruleIX The law applicable to the arbitration agreement in article 50.1(i) No choice of law(iv) The dispute resolution clauseX Conclusions on applicable lawXI The anti-suit injunctionXII Overall conclusionLORD BURROWS: (dissenting) (with whom Lord Sales agrees)1. Introduction
Content
Michaelmas Term
[2020] UKSC 38
On appeal from: [2020] EWCA Civ 574


JUDGMENT

Enka Insaat Ve Sanayi AS (Respondent) v OOO Insurance Company Chubb (Appellant)




before


Lord Kerr
Lord Sales
Lord Hamblen
Lord Leggatt
Lord Burrows


JUDGMENT GIVEN ON



9 October 2020



Heard on 27 and 28 July 2020



Appellant
David Bailey QC
Toby Landau QC
Marcus Mander
Clara Benn
(Instructed by Kennedys Law LLP (London))

Respondent
Robin Dicker QC
David Joseph QC
Niranjan Venkatesan

(Instructed by Shearman & Sterling LLP (London))



LORD HAMBLEN AND LORD LEGGATT: (with whom Lord Kerr agrees)

I. Introduction

1. Where an international commercial contract contains an agreement to resolve disputes by arbitration, at least three systems of national law are engaged when a dispute occurs. They are: the law governing the substance of the dispute; the law governing the agreement to arbitrate; and the law governing the arbitration process. The law governing the substance of the dispute is generally the law applicable to the contract from which the dispute has arisen. The law governing the arbitration process (sometimes referred to as the “curial law”) is generally the law of the “seat” of the arbitration, which is usually the place chosen for the arbitration in the arbitration agreement. These two systems of law may differ from each other. Each may also differ from the law which governs the validity and scope of the arbitration agreement.

2. The central issue on this appeal concerns which system of national law governs the validity and scope of the arbitration agreement when the law applicable to the contract containing it differs from the law of the seat of the arbitration.

3. This is an issue which has long divided courts and commentators, both in this country and internationally. On one side there are those who say that the law that governs a contract should generally also govern an arbitration agreement which, though separable, forms part of that contract. On the other side there are those who say that the law of the chosen seat of the arbitration should also generally govern the arbitration agreement. There have been Court of Appeal decisions falling on either side of this divide: Sulamérica Cia Nacional de Seguros SA v Enesa Engenharia SA [2012] EWCA Civ 638; [2013] 1 WLR 102 and C v D [2007] EWCA Civ 1282; [2008] Bus LR 843.

4. In its judgment in the present case [2020] EWCA Civ 574, the Court of Appeal considered that “the time has come to seek to impose some order and clarity on this area of the law” (para 89) and held that, unless there has been an express choice of the law that is to govern the arbitration agreement, the general rule should be that the arbitration agreement is governed by the law of the seat, as a matter of implied choice, subject only to any particular features of the case demonstrating powerful reasons to the contrary (para 91).

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5. On this appeal the appellant argues that this conclusion is heterodox and wrong and that the correct approach is that, in the absence of strong indications to the contrary, a choice of law for the contract is a choice of that law to govern the arbitration agreement. The appellant contends that in the present case the parties have chosen Russian law to govern the construction contract between them and that the implication that they intended the arbitration agreement included in that contract to be governed by Russian law is not displaced by their choice of London as the seat of arbitration.

6. If that issue is decided in its favour, the appellant goes on to argue that the Court of Appeal was wrong to grant an injunction to restrain it from pursuing proceedings in Russia in alleged breach of the arbitration agreement. The appellant’s case is that, because the arbitration agreement is governed by Russian law, the Russian courts are best placed to decide whether or not the arbitration agreement applies to the claim which the appellant has brought against the respondent in Russia and that, as a matter of comity or discretion, the English courts ought not to interfere with those proceedings by granting an anti-suit injunction.

II. Factual background

(i) The construction contract
7. On 1 February 2016 a power plant situated at Berezovskaya in Russia was severely damaged by fire. The appellant (“Chubb Russia”) is a Russian insurance company which had insured the owner of the power plant, a company now named PJSC Unipro (“Unipro”), against such damage. Chubb Russia is part of the Chubb Group, which is the world’s largest publicly traded property and casualty insurer.

8. The company responsible for the design and construction of the power plant under a contract made with Unipro in May 2011 was a Russian company called CJSC Energoproekt. The respondent (“Enka”) was engaged by Energoproekt as one of many sub-contractors involved in the construction project. Enka is a global engineering and construction company incorporated and based in Turkey with a substantial presence and history of operations in Russia, amongst other countries.

9. The contract between Energoproekt and Enka dated 27 June 2012 (“the construction contract”) is a substantial document running to 97 pages, with around 400 pages of attachments. It was executed in parallel Russian and English versions (though it provides that the Russian language version has precedence).

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10. The construction contract contains, in article 50, a dispute resolution clause in these terms:

Resolution of disputes
50.1. The Parties undertake to make in good faith every reasonable effort to resolve any dispute or disagreement arising from or in connection with this Agreement (including disputes regarding validity of this agreement and the fact of its conclusion (hereinafter - ‘Dispute’) by means of negotiations between themselves. In the event of the failure to resolve any Dispute pursuant to this article within 10 (ten) days from the date that either Party sends a Notification to the opposite Party containing an indication of the given Dispute (the given period may be extended by mutual consent of the Parties) any Party may, by giving written notice, cause the matter to be referred to a meeting between the senior managements of the Contractor and Customer (in the case of the Contractor senior management shall be understood as a member of the executive board or above, in the case of Customer, senior management shall be understood as general directors of their respective companies). The parties may invite the End Customer to such Senior Management Meeting. Such meeting shall be held within fourteen (14) calendar days following the giving of a notice. If the matter is not resolved within twenty (20) calendar days after the date of the notice referring the matter to appropriate higher management or such later date as may be unanimously agreed upon, the Dispute shall be referred to international arbitration as follows:

• the Dispute shall be finally settled under the Rules of Arbitration of the International Chamber of Commerce,

• the Dispute shall be settled by three arbitrators appointed in accordance with these Rules,

• the arbitration shall be conducted in the English language, and

• the place of arbitration shall be London, England.

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50.2. Unless otherwise explicitly stipulated in this Agreement, the existence of any Dispute shall not give the Contractor the right to suspend Work.

50.3. Not used.

50.4. Not used.

50.5. All other documentation such as financial documentation and cover documents for it must be presented in Russian.”

11. On 21 May 2014 Energoproekt transferred its rights and obligations under the construction contract to Unipro pursuant to an assignment agreement made between Energoproekt, Unipro and Enka. By clause 7.5 of that agreement, the parties agreed that disputes between Unipro and Enka were to be finally and exclusively resolved by arbitration in accordance with the provisions of article 50.1 of the construction contract.

12. After the fire in February 2016 Chubb Russia paid 26.1 billion roubles (approximately US$400m) to Unipro under its property insurance policy and thereby became subrogated to any rights of Unipro to claim compensation from third parties for the damage caused by the fire.
(ii) The Russian proceedings
13. On 25 May 2019 Chubb Russia filed a claim in the Moscow Arbitrazh (ie commercial) Court against Enka and ten other defendants whom it claimed were jointly liable for the damage caused by the fire. Chubb Russia was required by the Moscow court to provide further details of its claims, following which the claims were accepted by the court on 3 September 2019.

14. On 17 September 2019 Enka filed a motion in the Russian proceedings to have Chubb Russia’s claim against it dismissed (or “left without consideration”) pursuant to article 148(5) of the Arbitrazh Procedure Code, which is intended to give effect to Russia’s obligations under article II(3) of the Convention on the Recognition and Enforcement of Foreign Arbitral Awards 1958 (“the New York Convention”) to refer to arbitration parties who have agreed to submit to arbitration a dispute of which a court of a contracting state is seized. Enka argued that the claim against it fell within the scope of the arbitration agreement contained in article 50.1


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of the construction contract and ought therefore to be resolved, not by the Russian courts, but by an arbitration conducted in accordance with that provision in London. The Moscow court decided to deal with Enka’s motion at the same time as the merits of Chubb Russia’s claims at a hearing fixed for 22 January 2020.

15. Following that hearing, which continued on two later dates, on 18 March 2020 the judge in the Russian proceedings announced her decisions (a) not to grant Enka’s motion to refer the claim against it to arbitration and (b) to dismiss Chubb Russia’s claims against all the defendants on the merits. The reasons for those decisions were given in a written judgment handed down on 6 May 2020.

16. Chubb Russia and Enka have both filed appeals in the Russian proceedings (in relation to the decision on the merits and the decision to refuse Enka’s application, respectively).
(iii) The English proceedings
17. Meanwhile, Enka had on 16 September 2019 brought an arbitration claim in the Commercial Court in London seeking an anti-suit injunction to restrain Chubb Russia from further pursuing the Russian proceedings against Enka on the ground that this was a breach of the arbitration agreement in article 50.1 of the construction contract. Enka also sought injunctions against other members of the Chubb Group said to be “caught up” in Chubb Russia’s breach of the arbitration agreement, namely Chubb UK Ltd, Chubb European Group SE (“Chubb Europe”) and the ultimate parent company of the Chubb Group which is incorporated in Switzerland.

18. On 15 October 2019 Carr J declined to grant an interim anti-suit injunction but gave directions for an expedited trial. The trial took place on 11 and 12 December 2019 before Andrew Baker J. He gave judgment on 20 December 2019, dismissing Enka’s claims against all the defendants. His primary reason for doing so was that he considered the appropriate forum to decide whether Chubb Russia’s claim against Enka falls within the arbitration agreement to be the Moscow Arbitrazh Court and not the English Commercial Court.

19. Enka applied to the Court of Appeal for permission to appeal from this decision as it applied to Chubb Russia (alone). The application was granted on 6 February 2020 and the appeal was heard on 7 and 8 April 2020. On 29 April 2020 the Court of Appeal (Flaux, Males and Popplewell LJJ) allowed Enka’s appeal and issued an anti-suit injunction restraining Chubb Russia from continuing the Russian proceedings.

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(iv) The arbitration proceedings
20. On 10 January 2020 Enka gave notice to Chubb Russia and Chubb Europe of a “Dispute” under article 50 of the construction contract. This was followed on 11 March 2020 by a request for arbitration filed with the International Chamber of Commerce (“ICC”) in which Enka sought a declaration that Chubb Russia’s claims in the Russian court fall within the scope of the arbitration agreement and damages.

21. On 22 May 2020 Chubb Russia and Chubb Europe filed their answer to the request for arbitration in which they challenged the jurisdiction of the arbitrators and denied that Enka is entitled to any of the relief claimed.

22. On 12 June 2020 the ICC notified the parties of the appointment of Mr Michael Brindle QC as president of the arbitral tribunal. The other members of the tribunal are Lord Hoffmann, nominated by Enka, and Lord Mance, nominated by Chubb Russia and Chubb Europe (without prejudice to their objections to the jurisdiction of the tribunal).
(v) This appeal
23. On 26 May 2020 Chubb Russia applied to the Supreme Court for permission to appeal from the decision of the Court of Appeal. On 5 June 2020 this court granted permission to appeal and also stayed the anti-suit injunction upon Chubb Russia giving suitable undertakings to protect Enka’s position pending the outcome of the appeal. The appeal was expedited and heard over two days on 27 and 28 July 2020.

24. It is a striking feature of the English proceedings that the trial, the appeal to the Court of Appeal and the appeal to the Supreme Court have all been heard in just over seven months. This is a vivid demonstration of the speed with which the English courts can act when the urgency of a matter requires it.

III. The English conflict of laws rules

(i) The Rome I Regulation
25. Where a court of England and Wales has to decide which system of national law governs a contract, the court must normally apply the provisions of the “Rome I Regulation” (a shorthand for Regulation (EC) No 593/2008 of the European Parliament and of the Council of 17 June 2008 on the law applicable to contractual

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obligations). By article 1(1), the Rome I Regulation applies, in situations involving a conflict of laws, to contractual obligations in civil and commercial matters. Article 1(2)(e), however, excludes from its scope “arbitration agreements and agreements on the choice of court”.

26. Pursuant to article 3, a contract to which the Rome I Regulation applies is governed by the law chosen by the parties, where the choice is made expressly or clearly demonstrated by the terms of the contract or the circumstances of the case. In determining whether the parties have made a choice of law, the court should adopt a broad Regulation-based approach, not constrained by national rules of contractual interpretation: see eg Dicey, Morris & Collins on The Conflict of Laws, 15th ed (2012), para 32-048. Article 4 contains rules for determining the law applicable to the contract to the extent that no such choice has been made. Article 4(1) sets out presumptions or prima facie rules that apply in relation to particular types of contract. However, where it is clear from the circumstances of the case that the contract is manifestly more closely connected with another country, or where none of the prima facie rules applies, articles 4(3) and 4(4) respectively provide for the contract to be governed by the law of the country with which it is most closely connected.
(ii) The common law rules
27. Because the Rome I Regulation does not apply to arbitration agreements, an English court which has to decide which system of law governs the validity, scope or interpretation of an arbitration agreement must apply the rules developed by the common law for determining the law governing contractual obligations. Those rules are that a contract (or relevant part of it) is governed by: (i) the law expressly or impliedly chosen by the parties; or (ii) in the absence of such choice, the law with which it is most closely connected: see eg Dicey, Morris & Collins on The Conflict of Laws, 15th ed (2012), rule 64(1).

28. In view of the similarity between the common law rules and the rules provided by the Rome I Regulation, cases in which the two regimes would yield different results are likely to be rare. But in principle, where an English court has to determine which law governs an arbitration agreement incorporated in a contract, it is the common law rules alone which - because of the exclusion of arbitration agreements from the scope of the Rome I Regulation by article 1(2)(e) - the court must apply.

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(iii) Party choice
29. The starting point at common law (as under the Rome I Regulation) is that contracting parties are free to choose the system of law which is to govern their contract, provided only that their choice is not contrary to public policy. The court must therefore construe the contract to see whether the parties have agreed on a choice of law to govern it. As Lord Diplock explained in Cie Tunisienne de Navigation SA v Cie d’Armement Maritime SA [1971] AC 572, 603:

“The first stage, therefore, when any question arises between parties to a contract as to the proper law applicable to it, is to determine whether the parties intended by their contract to exercise any choice at all and, if they did, to determine what was the system of law which they selected. In determining this the English court applies the ordinary rules of English law relating to the construction of contracts.”

30. The exclusion of arbitration agreements from the scope of the Rome I Regulation by article 1(2)(e) does not prevent an arbitration clause from being taken into consideration for the purposes of article 3 in determining whether there has been a choice of the law applicable to other parts of the contract, as noted in Giuliano and Lagarde, Council Report on the Convention on the law applicable to contractual obligations (OJ EU No C 282-1) at p 12. By the same token, the fact that other parts of the contract are within the scope of the Rome I Regulation does not prevent them from being taken into consideration in determining in accordance with the English common law rules of construction whether the parties have agreed on a choice of law to govern the arbitration clause. Like any question of contractual interpretation, this is a unitary exercise which requires the court to construe the contract, including the arbitration clause, as a whole.

(iv) Law of the forum

31. Where an English court has to decide whether a contract which is said to be governed by a foreign system of law is valid, the court applies the “putative applicable law”, in other words the law which would govern the contract if it were validly concluded. At the prior stage, however, of determining what is the applicable law or putative applicable law of the contract, all the leading authorities proceed on the basis that it is English rules of law which apply, as stated by Lord Diplock in the passage quoted above. In the Tunisienne case, for example, a contract for the transport of oil in several shipments contained a provision (clause 13) that the contract “shall be governed by the laws of the flag of the vessels carrying the goods …”. The first question which the House of Lords had to decide was whether, in the

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circumstances of the case which included the fact that vessels flying different flags were used to ship the oil, this clause conveyed a choice of French law to govern the contract, as the shipowners argued. To answer that question the House did not apply the rules of French law governing the interpretation of contracts, but (only) those of English law.

32. The same approach was adopted in Whitworth Street Estates (Manchester) Ltd v James Miller & Partners Ltd [1970] AC 583, where the House of Lords held that subsequent conduct of the parties could not be looked at to construe a contract in order to decide whether it was intended to be governed by English (rather than Scottish) law. The exclusion of subsequent conduct as an aid to interpretation is a consequence of the objective principle of interpretation in English law, which searches not for what the parties subjectively thought or intended the effect of their contract to be but for what reasonable people in their position would be understood to have meant by the language used. Although in the Whitworth Street Estates case English law was one putative applicable law of the contract, there is no suggestion in the speeches that this was the basis for applying English principles of contractual interpretation.

33. In our view, it is both consistent with authority and sound in principle to apply English law as the law of the forum to ascertain whether the parties have agreed on the law which is to govern their contract (and, if not, what law governs it in the absence of agreement). To apply any other law for this purpose would introduce an additional layer of complexity into the conflict of laws analysis without any clear justification and could produce odd or inconsistent results. As the authors of Dicey, Morris & Collins on The Conflict of Laws, 15th ed (2012) observe, at para 32-036, by reference to a case in which subsequent conduct was taken into account to construe a contract found to be governed by Chilean law because it was admissible under that law:

“But it would be very odd if when a question arose as to whether a contract was governed by English law or Chilean law, subsequent conduct would not be taken into account in determining whether a choice of English law could be inferred, but it could be taken into account in determining whether Chilean law applied.”

34. The Court of Appeal in the present case asserted (although without explanation) that, in construing the contract to determine whether a choice of governing law applies to an arbitration agreement within it, the court should apply the principles of construction of the main contract law if different from English law (see paras 90 and 105(2) of the judgment). We do not consider this to be correct. As we have indicated, the proper approach in determining whether there has been a

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choice of law is to apply English law as the law of the forum. Where the question is whether there has been a choice of the law applicable to an arbitration clause, the relevant English law rules are the common law rules which require the court to interpret the contract as a whole applying the ordinary English rules of contractual interpretation. The main contract law, if different, has no part to play in the analysis.

(v) Express or implied choice
35. Many of the cases applying the common law rules distinguish between a choice of law which is “express” or “implied”. Article 3 of the Rome I Regulation draws a similar distinction in referring to a choice which is “made expressly or clearly demonstrated”. The terminology is useful in reflecting the fact that an agreement on a choice of law to govern a contract, like any contractual term, may be explicitly articulated or may be a matter of necessary implication or inference from other terms of the contract and the surrounding circumstances. The distinction, however, is not a sharp one: language may be more or less explicit and the extent to which a contractual term is spelt out in so many words or requires a process of inference to identify it is a matter of degree. Determining whether the parties have agreed on a choice of law to govern their contract is in every case a question of interpretation. It is also important to keep in mind that whether a choice is described as express or implied is not a distinction on which any legal consequence turns. An implied choice is still a choice which is just as effective as a choice made expressly.

(vi) The default rule
36. Where a choice of law cannot be identified by interpreting the contract, the approach of the common law was at one time to presume that the parties must nevertheless have intended their contract to be governed by some particular system of national law and to impute a relevant intention to them. This is reflected, for example, in the first edition of Dicey’s treatise on the conflict of laws, which defined the law governing a contract as “the law or laws to which the parties intended, or may fairly be presumed to have intended, to submit themselves”: Dicey, A Digest on the Law of England with reference to the Conflict of Laws, 1st ed (1896), rule 143. In the second half of the 20th century, however, the test of presumed intention came gradually to be superseded by an acknowledgement that at this stage of the analysis the court is no longer concerned with intention at all and is applying a positive rule of law, with the rule being that the contract is governed by the system of law with which it has its “closest and most real connection”: see Dicey, Morris & Collins on The Conflict of Laws, 15th ed (2012), paras 32-006 - 32-007; Hellenic Steel Co v Svolamar Shipping Co Ltd (The Komninos S) [1991] 1 Lloyd’s Rep 370, 374 (Bingham LJ). Lord Diplock stated the modern position clearly in the Tunisienne case, at pp 603-604:

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“If, applying these rules [sc the ordinary rules of English law relating to the construction of contracts], the court reaches the conclusion that the parties did not intend to exercise any choice of proper law, or is unable to identify what their choice was, it becomes necessary for the court to proceed to the second stage, of determining itself what is the proper law applicable. In doing so, the court applies the English rule of the conflict of laws … that the proper law is that system of law with which the transaction has its closest and most real connection: Bonython v Commonwealth of Australia [1951] AC 201, 219.

My Lords, this is applied as a positive rule of English law. It is applied not because it is the choice of the parties themselves but because they never intended to exercise their liberty to make a choice or, if they did, they have failed to make their choice clear.”

37. Whether the parties have agreed on a choice of law is a matter which inevitably may sometimes give rise to differences of opinion. In the Tunisienne case three members of the House of Lords appellate committee (Lord Morris of Borth-y-Gest, Viscount Dilhorne and Lord Diplock) held that clause 13 (quoted earlier) was in its context to be construed as an agreement that French law was to govern the contract. The other two members of the committee (Lord Reid and Lord Wilberforce) did not consider that the clause could be so construed but still concluded at the second stage of the analysis that French law was the governing law. In Amin Rasheed Shipping Corpn v Kuwait Insurance Co (The Al Wahab) [1984] AC 50, Lord Diplock (with whose speech three of the other law lords agreed) applied the principles he had identified in the Tunisienne case to determine whether an insurance contract was governed by English law or the law of Kuwait. He concluded (at p 62) that on their proper construction the provisions of the contract, taken as a whole, “by necessary implication point ineluctably to the conclusion that the intention of the parties was that their mutual rights and obligations under it should be determined in accordance with the English law of marine insurance”. Lord Wilberforce reached the same result on the basis that English law was the system of law with which the contract had the closest and most real connection.

(vii) Splitting the contract
38. English common law (along with other legal systems) recognises the possibility that different parts of a contract may be governed by different laws - a concept known in conflict of laws theory as dépeçage. This is also expressly provided for in the Rome I Regulation. Article 3(1) includes the statement:

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“By their choice the parties can select the law applicable to the whole or to part only of the contract.”

39. There are many English cases in which courts have contemplated that different obligations in the same contract may be governed by different laws. The earliest such case to which we were referred was the decision of the Court of Appeal in Jacobs, Marcus & Co v Crédit Lyonnais (1884) 12 QBD 589. There appear to be few cases, however, in which such a situation has been found to exist (although one such case is Libyan Arab Foreign Bank v Bankers Trust [1989] QB 728, 746-747). No doubt this is because, as Lord MacDermott said in Kahler v Midland Bank Ltd [1950] AC 24 at 42, “the courts of this country will not split the contract in this sense readily or without good reason.” It is generally reasonable to assume that parties would intend or expect their contract to be governed by a single system of law. To apply different systems of law to different parts of a contract has the potential to give rise to inconsistency and uncertainty. This is particularly so where questions about the validity or enforceability of contractual obligations arise. As observed in Dicey, Morris & Collins on The Conflict of Laws, 15th ed (2012) at para 32-026:

“Even if different parts of a contract are said to be governed by different laws, it would be highly inconvenient and contrary to principle for such issues as whether the contract is discharged by frustration, or whether the innocent party may terminate or withhold performance on account of the other party’s breach, not to be governed by a single law.”

40. The assumption that, unless there is good reason to conclude otherwise, all the terms of a contract are governed by the same law applies to an arbitration clause, as it does to any other clause of a contract. As Mustill J said in Black Clawson International Ltd v Papierwerke Waldhof-Aschaffenburg AG [1981] 2 Lloyd’s Rep 446, 456: “In the ordinary way, this [sc the law of the arbitration agreement] would be likely to follow the law of the substantive contract.” An arbitration clause may, however, more readily than other clauses be governed by a different law. One reason for this is that an arbitration clause has a different subject matter and purpose from the rest of the contract. It is concerned not with establishing substantive rights and obligations of the parties but with providing a mechanism by which a dispute about such rights and obligations will be resolved. A second reason flows from the principle of separability of the arbitration agreement. This is a cardinal principle of arbitration law, codified in section 7 of the Arbitration Act 1996. Section 7 provides that, unless otherwise agreed by the parties, “an arbitration agreement which forms or was intended to form part of another agreement … shall not be regarded as invalid, non-existent or ineffective because that other agreement is invalid, or did not come into existence or has become ineffective, and it shall for that purpose be treated as a distinct agreement.”

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41. As counsel for Chubb Russia emphasised, the principle of separability is not a principle that an arbitration agreement is to be treated as a distinct agreement for all purposes but only that it is to be so treated for the purpose of determining its validity or enforceability. That is clear from the words “for that purpose” in section 7 of the 1996 Act. Thus, the separability principle does not require that an arbitration agreement should be treated as a separate agreement for the purpose of determining its governing law. Nevertheless, the principle is relevant to the conflict of laws analysis because it alleviates the difficulty identified by Dicey, Morris & Collins in the passage quoted at para 39 above in treating different parts of a contract as governed by different laws. Where the separability principle is recognised by the putative applicable law of the arbitration agreement, no inconsistency will arise from treating issues such as whether the contract is discharged by frustration, or whether the innocent party may terminate or withhold performance on account of the other party’s breach, or whether the contract has been rescinded for misrepresentation, as governed by a different law from the law of the arbitration agreement, as the resolution of those issues will not affect the validity or enforceability of the arbitration agreement.

42. The possibility that an arbitration agreement may be governed by a different system of law from the contract of which it forms part is also implicitly recognised by the exclusion of arbitration agreements from the scope of the Rome I Regulation, with the consequence that the law applicable to an arbitration agreement and the law applicable to the rest of the contract must be determined independently by different conflict of laws regimes.

IV. Choice of law for the whole contract

(i) Significance of a governing law clause
43. It is rare for the law governing an arbitration clause to be specifically identified (either in the arbitration clause itself or elsewhere in the contract). It is common, however, in a contract which has connections with more than one country (or territory with its own legal system) to find a clause specifying the law which is to govern the contract. A typical clause of this kind states: “This Agreement shall be governed by and construed in accordance with the laws of [name of legal system].” Where the contract also contains an arbitration clause, it is natural to interpret such a governing law clause, in the absence of good reason to the contrary, as applying to the arbitration clause for the simple reason that the arbitration clause is part of the contract which the parties have agreed is to be governed by the specified system of law. As stated in Redfern and Hunter: Law and Practice of International Commercial Arbitration, 6th ed (2015) at para 3.12:

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“Since the arbitration clause is only one of many clauses in a contract, it might seem reasonable to assume that the law chosen by the parties to govern the contract will also govern the arbitration clause. If the parties expressly choose a particular law to govern their agreement, why should some other law - which the parties have not chosen - be applied to only one of the clauses in the agreement, simply because it happens to be the arbitration clause?”

44. This approach is supported by other leading commentaries. For example, Merkin on Arbitration Law, Issue 84 (2020), para 7.12, states that:

“… even if there is no express contractual statement to that effect, a choice of law clause for the entire agreement is likely to be construed as extending to the arbitration clause. There are numerous decisions to this effect … However, that presumption may be ousted in appropriate circumstances …”

See also Dicey, Morris & Collins on The Conflicts of Laws, 15th ed (2012) at para 16-017:

“If there is an express choice of law to govern the contract as a whole, the arbitration agreement may also be governed by that law.”
(ii) Domestic case law
45. There is a considerable body of English case law which proceeds on the assumption that a choice of law for the contract will normally apply to an arbitration clause in the contract. The approach was summarised by Colman J in Sonatrach Petroleum Corpn (BVI) v Ferrell International Ltd [2002] 1 All ER (Comm) 627 at para 32:

“Where the substantive contract contains an express choice of law, but the agreement to arbitrate contains no separate express choice of law, the latter agreement will normally be governed by the body of law expressly chosen to govern the substantive contract.”

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46. It has not generally been considered to make any difference in this regard that the arbitration clause provides for arbitration to take place in a different country from the country whose law has been chosen to govern the contract. Examples of decisions in which a choice of law clause in the contract has been treated as applying to the arbitration agreement despite the seat of arbitration being in a different jurisdiction include: Cia Maritima Zorroza SA v Sesostris SAE (The Marques De Bolarque) [1984] 1 Lloyd’s Rep 652, 653; Union of India v McDonnell Douglas Corpn [1993] 2 Lloyd’s Rep 48, 49-50; Sumitomo Heavy Industries Ltd v Oil and Natural Gas Commission [1994] 1 Lloyd’s Rep 45, 57; Deutz AG v General Electric Co (Thomas J, 14 April 2000) at p 17; Peterson Farms Inc v C&M Farming Ltd [2004] EWHC 121 (Comm); [2004] 1 Lloyd’s Rep 603, paras 43-46; Leibinger v Stryker Trauma GmbH [2005] EWHC 690 (Comm), para 38; and Svenska Petroleum Exploration AB v Government of the Republic of Lithuania [2005] EWHC 2437 (Comm); [2006] 1 All ER (Comm) 731, paras 76-77.

47. A different view was expressed in XL Insurance Ltd v Owens Corning [2001] 1 All ER (Comm) 530, a case concerning a policy of insurance on “Bermuda form” terms which provide for New York law to govern the policy but for disputes to be determined by arbitration in London. The English court granted an injunction to restrain the insured from pursuing a claim against the insurers in the courts of Delaware. The insured argued that the choice of New York law to govern the policy included the arbitration agreement and that this agreement was invalid under the Federal Arbitration Act which formed part of New York law. Toulson J rejected that argument and concluded that, by stipulating for arbitration in London under the provisions of the 1996 Act, the parties had impliedly chosen English law to govern the arbitration agreement (see p 543b). We will consider his reasoning later in this judgment.

48. In C v D [2007] EWCA Civ 1282; [2008] Bus LR 843, another case concerning a Bermuda form insurance policy, the Court of Appeal likewise expressed the view (obiter) that the arbitration agreement was governed by English law. In C v D, however, Longmore LJ (with whom the other members of the court agreed) reached this conclusion, not on the basis of implied choice, but on the basis that there was no choice of law for the arbitration agreement so that it was necessary to identify the law with which it was most closely connected. He considered this to be the law of the place where the parties had chosen to arbitrate rather than the law of the insurance contract (paras 25-26).

49. Many commentaries and authorities, including XL Insurance and C v D, were considered by the Court of Appeal in Sulamérica Cia Nacional de Seguros SA v Enesa Engenharia SA [2012] EWCA Civ 638; [2013] 1 WLR 102. In a judgment with which the other members of the court agreed, Moore-Bick LJ said (at para 11):

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“It is common for parties to make an express choice of law to govern their contract, but unusual for them to make an express choice of the law to govern any arbitration agreement contained within it; and where they have not done so, the natural inference is that they intended the proper law chosen to govern the substantive contract also to govern the agreement to arbitrate.”

50. Moore-Bick LJ expressed reservations about the dicta of Longmore LJ in C v D, noting that the court in that case did not have the benefit of full citation of authority and that a rule that an arbitration agreement is governed by the law of the seat even where there is a choice of law clause in the contract cannot “easily be reconciled with the earlier authorities or with the established principles for determining the proper law” (para 24). His conclusion (at para 26) was in the following terms:

“In the absence of any indication to the contrary, an express choice of law governing the substantive contract is a strong indication of the parties’ intention in relation to the agreement to arbitrate. A search for an implied choice of proper law to govern the arbitration agreement is therefore likely (as the dicta in the earlier cases indicate) to lead to the conclusion that the parties intended the arbitration agreement to be governed by the same system of law as the substantive contract, unless there are other factors present which point to a different conclusion. These may include the terms of the arbitration agreement itself or the consequences for its effectiveness of choosing the proper law of the substantive contract …”

51. This approach was followed in Arsanovia Ltd v Cruz City 1 Mauritius Holdings [2012] EWHC 3702 (Comm); [2013] 2 All ER (Comm) 1. In that case a contract contained clauses providing that it was to be governed by the laws of India and that disputes were to be settled by arbitration in London. It was held that, as a matter of construction, the parties had chosen Indian law to govern the arbitration agreement.

52. Recently, in Kabab-Ji SAL (Lebanon) v Kout Food Group (Kuwait) [2020] EWCA Civ 6; [2020] 1 Lloyd’s Rep 269 the Court of Appeal similarly construed a clause in a contract which stated “This Agreement shall be governed by and construed in accordance with the laws of England” as meaning that all the terms of the contract were governed by English law including an arbitration clause which provided for arbitration in France. This conclusion was reinforced by the fact that

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the contract included a clause which stated that “This Agreement consists of … the terms of agreement set forth herein below …”.
(iii) Considerations of principle
53. A number of further considerations confirm the reasonableness of, as a general rule, construing a choice of law to govern the contract as applying to an arbitration agreement set out in a clause of the contract, even where the law chosen to govern the contract differs from that of the place chosen as the seat of the arbitration:

i) This approach provides a degree of certainty. The parties can be assured that an agreement as to the governing law will generally be an effective choice in relation to all of their contractual rights and obligations and to all of their disputes.

ii) It achieves consistency. The same system of law governs all the parties’ rights and obligations. It can be unsatisfactory for potentially closely related issues such as the identity of the contracting parties or the proper approach to the interpretation of their bargain to be governed by different systems of law, depending on whether it relates to the main contract or the arbitration agreement.

iii) It avoids complexities and uncertainties. As soon as the relationship between the parties is subject to two systems of law, problems can arise as to where and how to draw the boundaries between them. This is exemplified by the increasing prevalence of multi-tier dispute resolution clauses. If the arbitration agreement is governed by a different system of law from the main body of the contract, provisions that require negotiation and/or mediation and/or expert determination in advance of arbitration raise potentially difficult questions as to whether they are governed by the law applicable to the arbitration agreement or by the law generally applicable to the contract, and indeed as to whether those questions should be answered by applying the common law rules or the Rome I Regulation. Article 50.1 of the construction contract is an example of such a clause. Although we explain later how these difficulties may be addressed, if there is only one system of law then no such difficulties arise.

iv) It avoids artificiality. The principle that an arbitration agreement is separable from the contract containing it is an important part of arbitration law but it is a legal doctrine and one which is likely to be much better known

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to arbitration lawyers than to commercial parties. For them a contract is a contract; not a contract with an ancillary or collateral or interior arbitration agreement. They would therefore reasonably expect a choice of law to apply to the whole of that contract.

v) It ensures coherence. It is consistent with the treatment of other types of clauses whose validity is also insulated from challenges to the contract, such as choice of law or choice of court clauses. Such clauses are generally presumed to be governed by the law of the contract of which they form part: see Dicey, Morris & Collins on The Conflict of Laws, 15th ed (2012) at paras 12-103 and 12-109.

54. As a matter of principle and authority there are therefore strong reasons why an agreement on a choice of law to govern a contract should generally be construed as applying to an arbitration agreement set out or otherwise incorporated in the contract.
(iv) The international perspective
55. As to the international perspective, although there is no uniformity, there are many commentators on international arbitration who support such an approach, at least where there is an express choice of governing law for the contract. Examples to which we were referred include: Bantekas, “The Proper Law of the Arbitration Clause: A Challenge to the Prevailing Orthodoxy” (2010) 27 Journal of International Arbitration 1, 1-2; Born, International Commercial Arbitration, 2nd ed (2014), p 592; Grover, “Dilemma of the Proper Law of the Arbitration Agreement: An Approach Towards Unification of Applicable Laws” (2014) 32 Sing L Rev 227, 255; Choi, “Choice of Law Rules Applicable for International Arbitration Agreements” (2015) 11 Asian International Arbitration Journal 105, 108-109; Khatchadourian, “Fortifying the Arbitration Clause” in Ziadé (ed), Festschrift Ahmed Sadek El-Kosheri (2015), pp 53-56; and Miles and Goh, “A Principled Approach Towards the Law Governing Arbitration Agreements” in Kaplan and Moser (eds), Jurisdiction, Admissibility and Choice of Law in International Arbitration: Liber Amicorum Michael Pryles (2018) Chapter 24, p 393.

56. This is also said to be the approach generally adopted by ICC arbitrators (see Lew, “The Law Applicable to the Form and Substance of the Arbitration Clause: 40 Years of Application of the New York Convention” in van den Berg (ed), Improving the Efficiency of Arbitration Agreements and Awards, (1998) ICCA Congress Series Vol 9, pp 143-144). It would appear that the same approach has been adopted in a number of common law and civil law jurisdictions. These include Singapore, India,

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Pakistan, Germany and Austria. According to Chubb Russia they also include Hong Kong, Australia and Switzerland, although this was questioned by Enka.

57. Singapore provides an instructive example. In FirstLink Investments Corpn Ltd v GT Payment Pte Ltd [2014] SGHCR 12 it was held that the law of the seat should generally apply to the arbitration agreement. In BCY v BCZ [2016] SGHC 249; [2016] 2 Lloyd’s Rep 583 Steven Chong J disagreed and held that the approach in Sulamérica should be followed as it “is supported by the weight of authority and is, in any event, preferable as a matter of principle” (para 49). Having set out detailed reasons why that was so, he concluded that, as the arbitration agreement in that case was contained in a contract expressly governed by New York law, the presumption was that New York law governed the arbitration agreement and this presumption was not displaced by the choice of Singapore as the seat of arbitration.

58. BCY v BCZ has been approved by the Singapore Court of Appeal - see BNA v BNB [2020] 1 Lloyd’s Rep 55, para 44, where it was accepted by both parties as a correct statement of the law.

V. The approach of the Court of Appeal

(i) The Court of Appeal’s judgment
59. The Court of Appeal reached a contrary conclusion in the present case. Leaving aside cases in which, exceptionally, a choice of the law governing the arbitration agreement is specified in the arbitration agreement itself, Popplewell LJ (with whom Flaux and Males LJJ agreed) was prepared to accept that an express choice of the law applicable to the contract containing the arbitration agreement may sometimes, as a matter of construction, amount to an express choice of the law applicable to the arbitration agreement (para 90). But he considered that this conclusion would follow only in a minority of cases and that in all other cases there is a strong presumption that the parties have impliedly chosen the law of the seat of the arbitration to govern the arbitration agreement. This was said to be the general rule, “subject only to any particular features of the case demonstrating powerful reasons to the contrary” (para 91).
(ii) Separability
60. Our first difficulty with this proposed general rule is that we do not agree that it is only in a minority of cases that an express choice of law to govern the contract should properly be construed as being a choice of law to govern an arbitration agreement included in the contract. As we have discussed, a clause such as “This

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Agreement is to be governed by and construed in accordance with the laws of [a named country]” is naturally and sensibly understood to mean that the law of that country should govern and determine the meaning and effect of all the clauses in the contract which the parties signed including the arbitration clause. It is unclear to us why more should be needed - or what more on the Court of Appeal’s approach is required - to make it clear that a phrase such as “This Agreement” means the whole agreement and not just part of it.

61. The Court of Appeal justified its approach on the ground that a choice of law to govern the contract “has little if anything to say about the [arbitration agreement] law choice because it is directed to a different and separate agreement” (para 92). This was said to follow from the doctrine that an arbitration agreement is separable from the rest of the contract. In our view, this puts the principle of separability of the arbitration agreement too high. For reasons given earlier, the requirement that an arbitration clause is to be treated as a distinct agreement for the purpose of determining its validity, existence and effectiveness makes it more amenable than other parts of a contract to the application of a different law. The rationale underlying the separability principle is also relevant, as we will mention later, in cases where applying the governing law of the contract to the arbitration clause would render the arbitration agreement invalid or ineffective. But it does not follow from the separability principle that an arbitration agreement is generally to be regarded as “a different and separate agreement” from the rest of the contract or that a choice of governing law for the contract should not generally be interpreted as applying to an arbitration clause.

62. Descriptions of an arbitration clause as, for example, “collateral to the main contract in which it is incorporated” (Paal Wilson & Co A/S v Partenreederei Hannah Blumenthal (The Hannah Blumenthal) [1983] 1 AC 854, 917, per Lord Diplock) or “a separate contract, ancillary to the main contract” (Bremer Vulkan Schiffbau und Maschinenfabrik v South India Shipping Corpn Ltd [1981] AC 909, 998, per Lord Scarman) need to be seen in their context as ways of expressing the doctrine that the discharge by frustration (or for other reasons) of the substantive obligations created by the contract will not discharge the parties’ agreement to arbitrate. The arbitration clause is nonetheless part of the bundle of rights and obligations recorded in the contractual document. So, for example, an assignment of the contract will include an arbitration clause without the need for any separate or additional assignment: see Schiffahrtsgesellschaft Detlev von Appen GmbH v Voest Alpine Intertrading GmbH (The Jay Bola) [1997] 2 Lloyd’s Rep 279, 285; Shayler v Woolf [1946] Ch 320; and Cockett Marine Oil DMCC v ING Bank NV (The M/V Ziemia Ciesznska) [2019] EWHC 1533 (Comm); [2019] 2 Lloyd’s Rep 541. As Colman J put it in construing the words “any clause of this Agreement” as including an arbitration clause in JSC Zestafoni G Nikoladze Ferroalloy Plant v Ronly Holdings Ltd [2004] EWHC 245 (Comm); [2004] 2 Lloyd’s Rep 335, para 31:

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“There is nothing in the intrinsic character of an arbitration agreement as having an attribute of separability which prevents it from being included in that phrase.”

63. Moore-Bick LJ summed up the position clearly when he said in the Sulamérica case at para 26:

“The concept of separability itself, however, simply reflects the parties’ presumed intention that their agreed procedure for resolving disputes should remain effective in circumstances that would render the substantive contract ineffective. Its purpose is to give legal effect to that intention, not to insulate the arbitration agreement from the substantive contract for all purposes.”

64. In his lead judgment in the Court of Appeal Popplewell LJ quoted this passage (at para 93) and appeared there to recognise that it is wrong to characterise an arbitration clause generally as a separate agreement. He went on, however, to make a more specific point that one of the purposes for which an arbitration agreement is treated as separate and severable is that of applying the curial law which, where the parties have chosen a different arbitration seat - and hence curial law - from the law applicable to their contract, is distinct from the latter system of law. The rhetorical question was posed, at para 94: “Why then should [the law applicable to the contract] have anything to say about the closely related aspect of the very same arbitration agreement, namely the [law which governs it] (absent express language to that effect so as to give rise to an express choice of [the arbitration agreement] law)?” Leaving aside what should count as “express language” in this regard, this argument rests on the premise that the curial law which governs the arbitration process is so closely related to the law governing the arbitration agreement that a choice of law to govern the contract should generally be presumed not to apply to an arbitration clause when the parties have chosen a different curial law. It is to this argument, which was central to the Court of Appeal’s reasoning, that we therefore turn.
(iii) The overlap argument
65. This argument, which we will call the “overlap argument”, seems to have made its first appearance in XL Insurance Ltd v Owens Corning [2001] 1 All ER (Comm) 530, mentioned earlier, where Toulson J considered that, by stipulating for arbitration in London under the provisions of the Arbitration Act 1996, the parties had impliedly chosen English law to govern the validity of the arbitration agreement despite the choice of New York law as the governing law of the policy (see p 543b).

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His essential reasoning (at p 541e) was that the substance and process of arbitration “are closely intertwined” and that the 1996 Act “contains various provisions which could not readily be separated into boxes labelled ‘substantive arbitration law’ or ‘procedural law’, because that would be an artificial division”.

66. The Court of Appeal in the present case endorsed and elaborated on this reasoning, concluding that “the overlap between the scope of the curial law and that of the [arbitration agreement] law strongly suggests that they should be the same” (para 96). They further considered that, given this overlap and the fact that the curial law which regulates the arbitration process is a matter of choice which comes with an express choice of seat, it seems “natural to regard” a choice of seat as an implied choice of the law applicable to the arbitration agreement (para 101). On this basis they held that there is a “strong presumption” that a choice of seat is an implied choice of the law which is to govern the arbitration agreement (para 105(3)).
(iv) Choice of curial law
67. On this appeal Chubb Russia disputed the initial premise that a choice of seat for an arbitration involves any choice of law at all, procedural or substantive. Counsel for Chubb Russia submitted that the application of the curial law of the seat is something that follows automatically from a choice of place of arbitration rather than being itself a matter of choice. They cited as an analogy a hypothetical case postulated by Redfern and Hunter: Law and Practice of International Commercial Arbitration, 6th ed (2015), para 3.63, of an English motorist who takes her car to France. Redfern and Hunter comment that:

“… it would be an odd use of language to say that this notional motorist had opted for ‘French traffic law’; rather, she has chosen to go to France - and the applicability of French law then follows automatically. It is not a matter of choice.”

68. We agree that it would be inapt to describe the tourist in this example as having made a choice to be regulated by French traffic law. But as Mr Dicker QC for Enka submitted, it is difficult to conceive that a person’s decision to visit France might be informed by a desire to be governed by French traffic law. By contrast, the nature and scope of the jurisdiction exercised by the courts of a country over an arbitration which has its seat there is a highly material consideration in choosing a seat for the arbitration. That is reinforced by the fact that the seat of an arbitration is a legal concept rather than a physical one. A choice of place as the seat does not dictate that hearings must be held, or that any award must actually be issued, in that place. As the Court of Appeal observed (at para 46), it is perfectly possible to conduct an arbitration with an English seat at any convenient location, anywhere in

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the world. Furthermore, under section 53 of the Arbitration Act 1996, unless otherwise agreed by the parties, where the seat of an arbitration is in England and Wales, any award in the proceedings shall be treated as made there, regardless of where it was signed, despatched or delivered to any of the parties (see also article 31(3) of the UNCITRAL Model Law on International Commercial Arbitration adopted by the United Nations Commission on International Trade Law on 21 June 1985). The point of agreeing a seat is to agree that the law and courts of a particular country will exercise control over an arbitration which has its seat in that country to the extent provided for by that country’s law. A choice of seat can in these circumstances aptly be regarded as a choice of the curial law.

69. As noted at the beginning of this judgment, however, the curial law which applies to the arbitration process is conceptually distinct from the law which governs the validity and scope of the arbitration agreement. Whether a choice of the curial law carries any implication that the parties intended the same system of law to govern the arbitration agreement - and, if so, the strength of any such implication - must depend on the content of the relevant curial law.
(v) Relationship between curial law and arbitration agreement law
70. In Carpatsky Petroleum Corpn v PJSC Ukrnafta [2020] EWHC 769 (Comm); [2020] Bus LR 1284, the claimant applied to enforce in England and Wales an arbitration award made in Sweden. Enforcement was resisted on the ground (among others) that there was no valid arbitration agreement in the contract between the parties. This argument depended on the assumption that the validity of the arbitration agreement was governed by the law of Ukraine. The contract provided for the “law of substance of Ukraine” to apply “on examination of disputes”. Butcher J held (at paras 67-71) that this was not a choice of Ukrainian law to govern the arbitration agreement and that, in the circumstances, the choice of Stockholm as the seat for any arbitration demonstrated an implied choice that the validity and interpretation of the arbitration agreement should be governed by Swedish law. His reasons were that: (1) it was reasonable to infer that the parties had deliberately chosen a neutral forum to resolve their disputes and hence “intended the law of that jurisdiction to determine issues as to the validity and ambit of that choice”; and (2) by choosing Sweden as the seat for the arbitration, the parties agreed to the application of the Swedish Arbitration Act, including section 48 which provides that, in the absence of agreement on a choice of law to govern an arbitration agreement with an international connection, the arbitration agreement shall be governed by the law of the country in which, by virtue of that agreement, the arbitration proceedings have taken place or will take place. It follows that, by providing for a Swedish seat, the parties were impliedly agreeing that Swedish law should govern the arbitration agreement.

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71. A similar inference could also be drawn where a contract contains an agreement for arbitration in Scotland. Section 6 of the Arbitration (Scotland) Act 2010 provides:

“Where -

(a) the parties to an arbitration agreement agree that an arbitration under that agreement is to be seated in Scotland, but

(b) the arbitration agreement does not specify the law which is to govern it,

then, unless the parties otherwise agree, the arbitration agreement is to be governed by Scots law.”

72. There is, however, no similar provision in the Arbitration Act 1996. The argument made by Enka, and accepted by the Court of Appeal, is that the 1996 Act contains provisions which are substantive as well as provisions which are procedural in nature, and that there is no clear division between the two. In these circumstances it is argued that, by choosing an English seat in the knowledge that the Arbitration Act 1996 will apply where the seat of the arbitration is in England, the parties are by implication choosing English law to govern at least some aspects of their substantive rights under the arbitration agreement. Furthermore, as suggested by Toulson J in the XL Insurance case, the provisions which affect substantive rights are intertwined with, and cannot readily be separated from, procedural provisions of the Act. The natural inference is said to be that the parties intended all their rights under the arbitration agreement to be governed by English law.
(vi) Section 4(5) of the 1996 Act
73. We agree that there is a close relationship between provisions of the Arbitration Act concerned with the arbitration agreement and provisions of the Act concerned with the arbitration process and that the distinction between them is not always clear or easy to draw. But we do not accept that this justifies the conclusion that a choice of an English seat of arbitration is an implied choice that the arbitration agreement will be governed by English law. In our view, a conclusive answer to that argument lies in a point raised by Chubb Russia on this appeal which was not fully developed in the Court of Appeal. The point in short is that almost all the provisions of the 1996 Act relied on to support the overlap argument are non-mandatory and, where the arbitration agreement is governed a foreign law, by reason of section 4(5)

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the non-mandatory provisions of the Act which concern arbitration agreements do not apply to it. As the legislation contemplates and specifically provides for a situation in which the arbitration agreement will be governed by a foreign law even though English law governs the arbitration process, no necessary inference can be drawn that, by choosing an English seat and with it English law as the curial law, parties are also impliedly choosing English law to govern their arbitration agreement.

74. Section 4(5) of the 1996 Act states:

“The choice of a law other than the law of England and Wales or Northern Ireland as the applicable law in respect of a matter provided for by a non-mandatory provision of this Part is equivalent to an agreement making provision about that matter.

For this purpose an applicable law determined in accordance with the parties’ agreement, or which is objectively determined in the absence of any express or implied choice, shall be treated as chosen by the parties.”

75. The clear meaning and effect of this provision is that, where a foreign law is applicable to an arbitration agreement (whether by choice or as determined in the absence of choice by the closest connection test), that fact alone is enough to disapply any non-mandatory provision of the Act in so far as it would otherwise affect a matter governed by the law applicable to the arbitration agreement. This is because the applicability of a foreign law is treated as equivalent to an agreement to make contrary provision about a matter. It is not necessary to inquire whether or not the foreign law does in fact make such contrary provision.

76. Even if there were otherwise considered to be any ambiguity in the meaning of section 4(5), it is dispelled by the Supplementary Report on the Arbitration Act 1996, dated January 1997, produced by the Departmental Advisory Committee on Arbitration (the “DAC”), which explains the genesis of the provision. As originally drafted, clause 2 of the Bill provided:

“(1) The provisions of this Part apply where the law of England and Wales or Northern Ireland is applicable, or the powers of the court are exercisable, in accordance with the rules of the conflict of laws.

(2) They apply, in particular -

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(a) to matters relating to or governed by the arbitration agreement, where the applicable law is the law of England and Wales or Northern Ireland; and

(b) to matters governed by the law applicable to the arbitral proceedings, where the seat of the arbitration is in England and Wales or Northern Ireland.”

77. The DAC Supplementary Report, at para 7(ii), observed that the purpose of clause 2(2) was to avoid the danger that all the provisions of Part I of the Act would be imported if English law was found to govern one particular aspect of an arbitration. For example:

“… an arbitration may have a French seat, with French law governing the procedure, but English law governing the arbitration agreement. In such a situation, only those provisions of the Act which concern arbitration agreements should apply. It would be quite wrong to apply provisions of the Act which concern arbitral procedure, as this would be governed by French law.”

Plainly, this reasoning applies equally in reverse to an arbitration with an English seat and English law governing the procedure, but French law governing the arbitration agreement. In such a situation, only those provisions of the Act which concern arbitral procedure should apply and not those which concern the arbitration agreement, as this would be governed by French law.

78. The clause as drafted, however, was considered unworkable in practice (although sound in principle) - one reason being that, to apply clause 2(2), it would have been necessary individually to characterise and separate all those provisions of the Act which concerned the arbitration agreement, as distinct from all those that concerned the arbitral procedure (see para 9(ii) of the DAC Supplementary Report). It was noted that the attempt to do this “had proved an extremely difficult and complex exercise”. Furthermore:

“Many provisions concern both arbitration agreements and arbitral procedure, and there appeared to be a divergence of view with respect to many others.”

79. In the light of these difficulties, the DAC decided to recommend recasting the whole provision so as to establish in section 2(1) the basic rule that Part I of the

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Act applies to arbitrations which have their seat in England and Wales or Northern Ireland (see paras 10-11 of the DAC Supplementary Report). In such a case, however, as explained in para 12:

“If … a foreign law has been chosen to govern any particular aspect of the arbitration, such as the arbitral procedure or the arbitration agreement, or is otherwise applicable to any such aspect, this is catered for by section 4(5). Therefore, reference may be made to this Act in the first instance, and then back to another law with respect to a specific issue. Whilst a process of characterisation may still have to be done, the combination of section 2 and section 4(5) avoids the dangers that:

– a choice of English law with respect to one part of an arbitration will import other parts of the Act that concern other aspects of the arbitration;

– a choice of England as the seat of the arbitration will necessarily entail the imposition of every provision of the Act.”

80. We observe that the “recasting” carried out on the recommendation of the DAC did not remove the need individually to characterise the provisions of the Act as substantive or procedural (or partly substantive and partly procedural) whenever the applicable law is in issue - an exercise described by the DAC as “extremely difficult and complex”. Nevertheless, the legislative history confirms that sections 2 and 4(5) of the 1996 Act as enacted were intended to have the effect that, where England is chosen as the seat of an arbitration but the arbitration agreement is governed by a foreign law, the non-mandatory provisions of the Act do not apply to any matter concerning the parties’ substantive rights and obligations under the arbitration agreement. The fact that the Act contains some provisions which are substantive, or partly substantive, cannot therefore - where those provisions are non-mandatory - support an inference that, by choosing an English seat of arbitration, parties must be taken to have contemplated and intended that the validity and scope of their arbitration agreement should be governed by English law.

81. The only mandatory provisions of the 1996 Act are sections 12, 13 and 66 to 68. Section 12 gives the court power to extend time for beginning an arbitration where there is a contractual time limit. This could only have any bearing on the law applicable to the arbitration agreement if the arbitration agreement includes a contractual time limit (which the relevant clause in this case does not). Section 13 applies the Limitation Acts to arbitrations. As these Acts include the Foreign

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Limitation Periods Act 1984, which applies foreign limitation law to any substantive obligation governed by foreign law, this cannot support an inference that the arbitration agreement is governed by English law. Sections 66 to 68 are concerned with enforcement of the award and applications to the court to challenge an award. They are procedural in nature and cannot be said to determine the law applicable to the arbitration agreement.

82. The provisions of the Arbitration Act 1996 therefore do not justify any general inference that parties who choose an English seat of arbitration thereby intend their arbitration agreement to be governed by English law.
(vii) Enka’s case on section 4(5)
83. Enka put forward three responses to this reasoning, none of which we have found persuasive.

84. First, counsel for Enka submitted that section 4(5) is concerned only with a choice of foreign law as the curial law for the arbitration process, and not with a choice of foreign law to govern the arbitration agreement. This, however, is not a tenable reading of section 4(5), which is manifestly not limited in this way and expressly applies whenever a foreign law is applicable in respect of a matter provided for by a non-mandatory provision of the Act. As emphasised on Enka’s own case, the matters provided for by non-mandatory provisions of the Act include some matters which concern the substance of the arbitration agreement as well as matters of procedure. Nor does section 4(4) support a different interpretation, as suggested in Enka’s written case. Section 4(4) provides that it “is immaterial whether or not the law applicable to the parties’ agreement is the law of England and Wales …”. This makes it clear that, if the parties have made arrangements by agreement in place of any non-mandatory provision of the Act, it is irrelevant whether or not that agreement is governed by English law. There is no inconsistency between that provision and the rule established by section 4(5) that a choice of foreign law in respect of a matter is equivalent to an agreement making provision about that matter.

85. The second argument advanced by Enka is that, if - as we think clear - section 4(5) is not confined to a choice of curial law and also covers cases where a foreign law is applicable to the arbitration agreement, section 4(5) nevertheless applies only where the arbitration agreement makes specific reference to the matter provided for by a non-mandatory provision of the Act.

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86. As authority for this restrictive interpretation, Enka relied on a dictum of Lord Steyn in Lesotho Highlands Development Authority v Impregilo SpA [2005] UKHL 43; [2006] 1 AC 221. That case involved an attempted challenge under section 68 of the 1996 Act to a decision by an arbitral tribunal to award interest under section 49(3) on principal sums awarded. The challenge failed because the House of Lords held that substantial injustice had not been established, as required to invoke section 68. However, Lord Steyn, who gave the leading speech, went on to point out that the challenge had also faced other formidable difficulties. In particular, the power under section 49(3) to award interest was prima facie available: the only question was whether there had been an agreement to the contrary for the purpose of section 49(2). In that context Lord Steyn noted (at para 37) that the judge at first instance had appeared to take the view that the law of Lesotho, as the law applicable to the construction contract under which the claim arose, might be relevant - presumably on the basis that it constituted an agreement to the contrary. In relation to this, Lord Steyn remarked:

“Ignoring for the moment the fact that one does not know what the law of Lesotho is, this view comes up against the difficulty that only an agreement in writing as defined in the Act can qualify as an agreement to the contrary under section 49: section 5(1). … The law of Lesotho is not an agreement to the contrary in writing.”

87. Lord Steyn made no mention of section 4(5) of the Act: the point that he made was based on section 5(1), which states that an “agreement between the parties as to any matter is effective for the purposes of this Part only if in writing”. Nevertheless, in C v D, at para 19, Longmore LJ treated Lord Steyn’s dictum as supporting the view that section 4(5) requires a choice of law “with regard to the specific provision of the [1996] Act which the parties agree is not to apply”. This statement was in turn relied on by Burton J in National Iranian Oil Co v Crescent Petroleum Co International Ltd [2016] EWHC 510 (Comm); [2016] 2 Lloyd’s Rep 146, paras 12-17, to conclude that a choice of Iranian law to govern an arbitration agreement was not sufficient to disapply section 7 of the 1996 Act, which codifies the principle of separability of the arbitration agreement, and that nothing less than an agreement expressly disapplying section 7 or the English law governing separability would have sufficed for that purpose.

88. The notion that section 4(5) applies only where parties have specifically excluded a non-mandatory provision of the Act by the terms of their arbitration agreement cannot, in our view, be accepted. It is not consistent with the language of section 4(5). The words “in respect of a matter provided for by a non-mandatory provision” require only that the matter governed by the foreign law should be a matter provided for by a non-mandatory provision of the Act. They cannot reasonably be read as requiring the parties’ specific agreement that the foreign law

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and not the non-mandatory provision will govern the matter. Apart from anything else, the second paragraph of section 4(5) makes it explicitly clear that no choice or agreement of the parties at all is required for section 4(5) to apply. The interpretation contended for by Enka is also inconsistent with the legislative intent, as explained in the DAC Supplementary Report. Furthermore, as the late Mr VV Veeder QC observed, if correct, it would make a practical nonsense of the 1996 Act by requiring parties choosing a foreign law to govern an agreement for arbitration in England to analyse and identify individually in their agreement each of the 35 or so non-mandatory provisions of the 1996 Act which they wish to disapply. We agree with Mr Veeder’s comment that the absurd consequences of such an interpretation speak for themselves: see Kaplan and Moser (eds), Jurisdiction, Admissibility and Choice of Law in International Arbitration: Liber Amicorum Michael Pryles (2018), Chapter 23, p 382.

89. We do not think it credible that Lord Steyn in the Lesotho case intended to endorse such an interpretation of section 4(5), and to do so without giving any reasons or even mentioning that provision of the Act at all. The likely reason why no reference was made to section 4(5) is that it was not relevant to the power to award interest. The Court of Appeal in the Lesotho case characterised the power to award interest under section 49(3) of the 1996 Act as discretionary and procedural - a characterisation which Lord Steyn seems to have endorsed when referring to the reasoning of the Court of Appeal in para 38 of his speech. The fact that section 49(3) was treated by both the Court of Appeal and the House of Lords in the Lesotho case as procedural in nature was later relied on by the Court of Appeal in Maher v Groupama Grand Est [2009] EWCA Civ 1191; [2010] 1 WLR 1564, para 38, to support a similar characterisation of the power of a court to award interest under section 35A of the Senior Courts Act 1981. Because section 49(3) is procedural, the choice of the law of Lesotho to govern substantive contractual rights was not in respect of a matter provided for by section 49(3) and therefore did not engage section 4(5). As it was not in doubt that the curial law governing the arbitration process was English law, to disapply section 49(3) would accordingly have required a specific agreement (in writing), as Lord Steyn observed. Whether or not Lesotho law contained any equivalent procedural power was in these circumstances not relevant. Even if it did, the law of Lesotho concerning that matter could not amount to an agreement to the contrary.

90. This is, we think, how Lord Steyn’s dictum should be understood. But whether this was what was meant or not, we are satisfied that section 4(5) does not require a specific agreement to disapply a non-mandatory provision of the Act. It follows that Longmore LJ’s statement to that effect in C v D was erroneous and that the National Iranian Oil Co case was wrongly decided on this point.

91. The third response of Enka was to contend that the consequences of giving section 4(5) what we consider to be its unambiguous meaning would be “as far-

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reaching as they are surprising” because it would cause numerous non-mandatory provisions, which parties to a London arbitration are unlikely to have intended to exclude, nonetheless to be excluded. To support this contention, Enka relied as examples on sections 5, 7, 30 and 58 of the 1996 Act.

92. Of these provisions, only section 7 which codifies the principle of separability concerns the validity or scope of the arbitration agreement. Section 5, which states that Part I of the Act applies only where the arbitration agreement is in writing, is not concerned with the validity or scope of the arbitration agreement but with the circumstances in which the provisions of the Act will apply. If the requirement of writing is not met, Part I of the Act will not apply to the arbitration agreement but it will be regulated by, and will still be valid at, common law (see section 81). Section 30, which empowers the arbitral tribunal to rule on its own jurisdiction, is procedural. It does not deal with the parties’ substantive rights under the arbitration agreement but with the competence of the tribunal to determine the validity and scope of those rights. Section 58, which provides for the finality of an arbitral award, is also procedural in nature. (For that reason, the insurer’s argument in C v D that, as a result of section 4(5), section 58 was disapplied by a choice of New York law to govern the arbitration agreement was misconceived.) These and other procedural non-mandatory provisions will only be excluded in the unusual event that the parties have chosen a foreign procedural law for an English-seated arbitration: see Dubai Islamic Bank PJSC v Paymentech Merchant Services Inc [2001] 1 All ER (Comm) 514, para 31; C v D [2007] EWHC 1541 (Comm); [2007] 2 All ER (Comm) 557, paras 25-26 (Cooke J); Sterling v Rand [2019] EWHC 2560 (Ch); [2019] 2 Lloyd’s Rep 577, para 58. As observed in the DAC Supplementary Report, para 7(ii) (quoted at para 77 above), in such a case it would be wrong to apply non-mandatory provisions of the Act which concern arbitral procedure, as this would be governed by foreign law.

93. We accept that characterising individual provisions of that Act as procedural or substantive can, as recognised by the DAC, be a difficult and complex exercise. But we are satisfied that giving section 4(5) its plain meaning does not lead to surprising or untoward consequences and is inconsistent with the contention that choosing English law as the curial law of an arbitration involves an implied choice of English law as the law applicable to the arbitration agreement.

94. For these reasons, we do not consider the overlap argument as accepted by the Court of Appeal to be well founded. While a choice of seat and curial law is capable in some cases (based on the content of the relevant curial law) of supporting an inference that the parties were choosing the law of that place to govern the arbitration agreement, the content of the Arbitration Act 1996 does not support such a general inference where the arbitration has its seat in England and Wales.

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VI. Avoiding invalidity

(i) The validation principle
95. It is a well-established principle of contractual interpretation in English law, which dates back at least to the time of Sir Edward Coke (see Coke upon Littleton (1628) 42a), that an interpretation which upholds the validity of a transaction is to be preferred to one which would render it invalid or ineffective. In the days when Latin was commonly used in the courts, it was expressed by the maxim “verba ita sunt intelligenda ut res magis valeat quam pereat” - translated by Staughton LJ in Lancashire County Council v Municipal Mutual Insurance Ltd [1997] QB 897, 910, as “the contract should be interpreted so that it is valid rather than ineffective”.

96. This principle may apply if, in determining whether the parties have agreed on a choice of governing law, a putative governing law would render all or a part of the contract ineffective. For example, in In re Missouri Steamship Co (1889) 42 Ch D 321 a contract for the carriage of cattle by sea from Boston to England contained a clause that the carrier should not be liable for the negligence of the master or crew of the ship. The clause was valid under English law but void under the law of Massachusetts as being against public policy. The cattle were lost by the negligence of the master and crew, and the shipper claimed against the carrier for the loss. In concluding that the parties intended the contract to be governed by English law, the judge and the Court of Appeal placed reliance on the presumption that, in the words of Fry LJ at p 341, “the law which would make the contract valid in all particulars was the law [intended] to regulate the conduct of the parties.”

97. In that case the potential invalidity of a significant clause in a contract was relied on as indicating the law intended to govern the entire contract. Where the clause in question is an arbitration clause, because of its severable character its putative invalidity may support an inference that it was intended to be governed by a different law from the other provisions of the contract - or may at least negate an inference that the law generally applicable to the contract was intended to apply to the arbitration clause.

(ii) Hamlyn v Talisker

98. An early but authoritative instance of such reasoning is the decision of the House of Lords in Hamlyn & Co v Talisker Distillery [1894] AC 202. A contract between an English company and a Scottish company, to be performed in Scotland, contained the following provision:

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“Should any dispute arise out of this contract, the same to be settled by arbitration by two members of the London Corn Exchange, or their umpire, in the usual way.”

It was common ground that this arbitration clause was valid according to English law but invalid according to the law of Scotland because the arbitrators were not named. The Court of Session held that the contract was governed by Scottish law as the law of the place of performance of the contract and that, in consequence, the arbitration clause was invalid. The House of Lords unanimously reversed that decision. As Lord Wilberforce subsequently noted in the Tunisienne case (at p 596), the only question decided by the House of Lords was whether the arbitration clause was governed by Scottish law or by English law. The members of the appellate committee were careful to limit their opinions to that question and to express no view on which law governed the other provisions of the contract.

99. Two reasons were given for concluding that the arbitration clause was governed by English law. One reason, most fully expressed by Lord Watson (at pp 212-213), was that the language of the arbitration clause showed that the parties were contracting with reference to English law, as the clause required the arbitrators to be members of a commercial body in London and to decide disputes “in the usual way” - in other words, in the manner customary in London. This reasoning did not, however, as it seems to us, justify treating the arbitration clause itself as governed by English law irrespective of which law governed the rest of the contract. It was a reason for inferring that the parties intended the arbitrators to apply English law in deciding any dispute under the contract and therefore for regarding the parties’ substantive contractual obligations as governed by English law. The question whether the arbitration clause was valid determined whether the arbitrators had jurisdiction, which was not at that time a matter that the arbitrators themselves were seen as competent to decide. This reasoning is therefore an early example of an approach we will consider shortly which treats a choice of seat of arbitration as an implied choice of law to govern the contract as a whole.

100. The principal enduring significance of Hamlyn v Talisker lies in the second reason given for the decision, which was clearly articulated by Lord Herschell LC and Lord Ashbourne. It was this reason which justified treating the arbitration clause as potentially governed by a different law from rest of the contract. In Lord Herschell’s words (at p 208):

“… the contract with reference to arbitration would have been absolutely null and void if it were to be governed by the law of Scotland. That cannot have been the intention of the parties; it is not reasonable to attribute that intention to them if the contract may be otherwise construed; …”

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Lord Ashbourne made the same point, stating graphically (at p 215) that “the arbitration clause becomes mere waste paper if it is held that the parties were contracting on the basis of the application of the law of Scotland, which would at once refuse to acknowledge the full efficacy of a clause so framed.” He continued:

“It is more reasonable to hold that the parties contracted with the common intention of giving entire effect to every clause, rather than of mutilating or destroying one of the most important provisions.”
(iii) The decision in Sulamérica
101. It was this reasoning which led the Court of Appeal in the Sulamérica case to conclude that the arbitration clause in that case was governed by English law despite, as discussed earlier, starting from the position that an express choice of law to govern the contract is normally intended to apply to the arbitration clause.

102. In the Sulamérica case claims were made by Brazilian companies involved in a construction project in Brazil under two insurance policies. Each policy contained an express choice of Brazilian law to govern the policy and a clause conferring exclusive jurisdiction on the courts of Brazil, but also mediation and arbitration clauses. These provided that any dispute should be referred to mediation and that, if the parties failed to agree the amount to be paid under the policy through mediation, the dispute should then be referred to arbitration in London. The insurers commenced arbitration proceedings in London and applied successfully to the English court for an interim injunction to restrain the insured from pursuing proceedings in the courts of Brazil. An appeal by the insured was dismissed by the Court of Appeal.

103. The insured’s case was that the contract, including the arbitration agreement, was governed by Brazilian law and that under Brazilian law the arbitration agreement was not enforceable against them without their consent. As noted earlier, Moore-Bick LJ (with whom Hallett LJ and Lord Neuberger MR agreed) accepted that the choice of Brazilian law to govern the contract was a strong indication that the parties intended that system of law to govern the arbitration agreement. However, Moore-Bick LJ identified two factors pointing the other way. The first was the overlap argument which we have just discussed: that by choosing London as the seat of arbitration, the parties must have foreseen and intended that the provisions of the Arbitration Act 1996 should apply to any arbitration, including those provisions which are more substantive than procedural in nature (para 29). For the reasons already given, we do not think that this argument is sound, as it overlooks the fact that, if the arbitration agreement was governed by Brazilian law, the non-

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mandatory substantive provisions of the Act would be excluded by section 4(5). It was the second factor, however, which the Court of Appeal regarded as decisive. This was the possible existence of a rule of Brazilian law which would render the arbitration agreement enforceable only with the insured’s consent (para 30). Moore-Bick LJ reasoned that, given the terms of the mediation and arbitration clauses, the parties could not have intended to choose a system of law that “either would, or might well, have that effect” (para 31). As he also put it, Brazilian law could not have been intended to govern the arbitration agreement when “there is at least a serious risk that a choice of Brazilian law would significantly undermine that agreement”.

104. In these circumstances it was necessary to identify the system of law with which the arbitration agreement was most closely connected. On this point Moore-Bick LJ said (at para 32) that:

“an agreement to resolve disputes by arbitration in London, and therefore in accordance with English arbitral law, does not have a close juridical connection with the system of law governing the policy of insurance, whose purpose is unrelated to that of dispute resolution; rather, it has its closest and most real connection with the law of the place where the arbitration is to be held and which will exercise the supporting and supervisory jurisdiction necessary to ensure that the procedure is effective.”

On this basis he concluded that the arbitration agreement was governed by English law.

105. Although reasoning of this kind was not relied on in the XL Insurance case - where, as discussed earlier, Toulson J relied on the overlap argument - it provides in our view a better justification for the result reached in that case. The fact that the arbitration clause would arguably have been invalid under New York law was itself a strong reason for interpreting the choice of New York law to govern the insurance policy as not extending to the arbitration agreement.
(iv) Commercial purpose of an arbitration clause
106. The principle that contracting parties could not reasonably have intended a significant clause in their contract, such as an arbitration clause, to be invalid is a form of purposive interpretation, which seeks to interpret the language of the contract, so far as possible, in a way which will give effect to - rather than defeat - an aim or purpose which the parties can be taken to have had in view. The strength

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of the inference that an interpretation of the contract would defeat an aim of the parties is, however, a matter of degree. An interpretation which would without doubt mean that an arbitration clause is void and of no legal effect at all gives rise to a very powerful inference that such a meaning could not rationally have been intended. That was the position in Hamlyn v Talisker, where it was common ground that, if the arbitration clause were governed by Scottish law, it would have been (in Lord Herschell’s words [1894] AC 202, 208) “absolutely null and void”. In the Sulamérica case the inference was weaker. There was a serious risk - but not a certainty - that, if Brazilian law applied to the arbitration clause, it would render the agreement to arbitrate enforceable only with the insured’s consent. That would not have meant that the arbitration clause was of no effect at all. As Moore-Bick LJ acknowledged, although most arbitration agreements permit either party to refer disputes to arbitration, some provide for arbitration only at the option of one or other party. He did not think it reasonable, however, to attribute to the parties in that case an intention to enter into “a one-sided arrangement of that kind” (para 30).

107. In Fiona Trust & Holding Corpn v Privalov [2007] UKHL 40; [2007] Bus LR 1719, the House of Lords affirmed the principle that “the construction of an arbitration clause should start from the assumption that the parties, as rational businessmen, are likely to have intended any dispute arising out of the relationship into which they have entered or purported to enter to be decided by the same tribunal” (see para 13, per Lord Hoffmann). Contrary to a submission made on behalf of Chubb Russia, this is not a parochial approach but one which, as the House of Lords noted in the Fiona Trust case, has been recognised by (amongst other foreign courts) the German Federal Supreme Court (Bundesgerichtshof), the Federal Court of Australia and the United States Supreme Court and, as stated by Lord Hope at para 31, “is now firmly embedded as part of the law of international commerce.” In his monumental work on International Commercial Arbitration, 2nd ed (2014), p 1403 Gary Born summarises the position as follows:

“In a substantial majority of all jurisdictions, national law provides that international arbitration agreements should be interpreted in light of a ‘pro-arbitration’ presumption. Derived from the policies of leading international arbitration conventions and national arbitration legislation, and from the parties’ likely objectives, this type of presumption provides that a valid arbitration clause should generally be interpreted expansively and, in cases of doubt, extended to encompass disputed claims. That is particularly true where an arbitration clause encompasses some of the parties’ disputes and the question is whether it also applies to related disputes, so that all such controversies can be resolved in a single proceeding (rather than in multiple proceedings in different forums).”

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108. To the extent that a putative applicable law fails to recognise this presumption that arbitration has been chosen as a one stop method of dispute resolution, it is inherently less likely that reasonable commercial parties would have intended that law to determine the validity and scope of their agreement to arbitrate (rather than litigate) disputes.

109. What degree of impairment to the commercial purpose of an arbitration agreement will be enough to negate the assumption that a choice of law to govern the contract is intended to apply to the arbitration agreement is not a question which can be answered in the abstract. As with any question of construction, it will be necessary to have regard to the particular words used in the contract and the surrounding circumstances, as well as the nature and extent of the risk that the purpose of the arbitration agreement would be undermined if its validity and scope were governed by the relevant system of law. We cannot improve on the formulation of Moore-Bick LJ in the Sulamérica case, para 31, that commercial parties are generally unlikely to have intended a choice of governing law for the contract to apply to an arbitration agreement if there is “at least a serious risk” that a choice of that law would “significantly undermine” that agreement.

VII. Relevance of the arbitration seat to the main contract law

110. During the 20th century a line of authority developed which treated a choice of place of arbitration, where there was no express choice of governing law clause in the contract, as a strong indication that the parties intended the contract to be governed by the law of that place. This inference hardened into a rule of law and reached its high-water mark in Tzortzis v Monark Line A/B [1968] 1 WLR 406, where the Court of Appeal held that a London arbitration clause gave rise to an implication that the parties intended English law to govern their contract which could only be rebutted by an express provision to the contrary.

111. In the Tunisienne case the House of Lords held that this put the strength of the implication too high and that the implication stemming from a choice of arbitral forum could be overridden by contrary indications derived from the express provisions of the contract or relevant surrounding circumstances. Nevertheless, Lord Wilberforce (at p 596B) described the inference that the parties intended the law of the place of arbitration to govern their contract as “a sound general rule”. Lord Diplock went further and said (at p 609E) that he did not “wish to throw any doubt upon the proposition that an arbitration clause is generally intended by the parties to operate as a choice of the proper law of the contract as well as the curial law and should be so construed unless there are compelling indications to the contrary ...”.

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112. As is apparent from, for example, the submissions of Robert Goff QC in defence of this approach in the Tunisienne case (at p 579D), its rationale was that contracting parties, by agreeing to arbitration in a particular place, must normally be taken to have expected the arbitrators to be resident in that place and to apply the law with which they are familiar. Lord Wilberforce expressed some reservation about this reasoning, observing (at p 596C):

“I venture to think that in commercial matters, at the present time, this may give insufficient recognition to the international character of the City of London as a commercial centre - the reason, rather than any preference for English rules, for which arbitration in London is selected.”

113. In the half century since the Tunisienne case was decided international arbitration has undergone major evolution and exponential growth. This has been accompanied by the development of international arbitral institutions such as the ICC’s International Court of Arbitration, the International Centre for Dispute Resolution established by the American Arbitration Association and the London Court of International Arbitration. The primary reason for selecting London as a place of arbitration is no longer the international character of London as a commercial centre but its attractiveness specifically as a forum in which to arbitrate international disputes. In some cases where the parties have chosen English law as the governing law of their contract, the ready availability of expert English lawyers may be a relevant factor in choosing London as the arbitration venue. But even in the kinds of arbitration where the members of the arbitral tribunal are chosen for their legal expertise (rather than solely or mainly for their commercial experience), there is nothing to prevent the appointment of lawyers qualified in other jurisdictions to act as arbitrators in a London-seated arbitration, or English lawyers to act as arbitrators in a foreign-seated arbitration, and such appointments are frequently made. Furthermore, experienced international arbitrators qualified as lawyers in England and Wales or in other jurisdictions are perfectly familiar with applying systems of law other than their own. There can in these circumstances be no general implication that a choice of London (or any other major arbitration centre) as the seat of arbitration demonstrates an intention that the parties’ contractual obligations will be governed by the law of that place. This is equally so whether the question of implied choice is governed by article 3 of the Rome I Regulation (in relation to the main body of the contract) or the common law conflict rules (in relation to the arbitration agreement).

114. There are still cases in which an arbitration clause providing for arbitration in London by, for example, English maritime arbitrators, or by London brokers, or by a local association or exchange, may in combination with other factors be regarded as conveying an implied choice of law. An example is Egon Oldendorff v Libera Corpn (No 2) [1996] 1 Lloyd’s Rep 380, where an arbitration clause in a

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charterparty made between Japanese owners and German charterers provided for arbitration in London by arbitrators appointed by the London Maritime Arbitrators’ Association. Also relevant to Clarke J’s decision that the parties intended English law to govern the charterparty were: (1) the fact that it was made on a well-known standard form containing clauses with well-known meanings in English law; and (2) that having agreed a “neutral” forum, the parties intended that forum to apply a “neutral” law, namely English law and not German or Japanese law. In such cases that implied choice of law will equally apply to the arbitration agreement: see Habas Sinai Ve Tibbi Gazlar Istihsal v VSC Steel Co Ltd [2013] EWHC 4071 (Comm); [2014] 1 Lloyd’s Rep 479, para 102.

115. Such a situation may be contrasted with one in which the arbitration clause, although it specifies a place of arbitration, does not provide for a method of identifying the arbitrators except through appointment by an international arbitral body such as the ICC. As Andrew Baker J observed in his judgment in this case (at para 62), the ICC is “a quintessentially and deliberately supranational institution”, with its own internal, and so again supranational, supervisory apparatus of the International Court of Arbitration and its Secretary General and Secretariat. In a case of this kind the parties could not reasonably assume that the selection of London as the seat of arbitration, even where it is a neutral forum, points ineluctably by necessary implication to a choice of English law to govern the contract so as to make the express designation of a governing law unnecessary.

116. Enka did not seek to argue on this appeal that the choice of London as the seat of arbitration in this case implies that the parties intended the construction contract as a whole to be governed by English law. But counsel for Enka submitted that, even though such an inference cannot be drawn in relation to the law intended to govern the parties’ substantive contractual obligations, it can nevertheless be drawn in relation to the arbitration agreement itself.

117. We do not accept this. Where there is insufficient reason to infer that the parties chose London as the seat of arbitration because they wanted the arbitrators to be versed in English law, that applies as much to any issues concerning the validity or scope of the arbitration agreement which the arbitrators might be asked to decide as it does to the substance of any dispute. Nor can any necessary implication be drawn from the possibility that issues concerning the validity or scope of the arbitration agreement might have to be decided by the English courts in the exercise of their supervisory jurisdiction. Questions of foreign law are dealt with in the English Commercial Court on a daily basis - the trial of the present case being an example - and, as Steyn LJ said in Star Shipping AS v China Shipping Foreign Trade Transportation Corpn (The Star Texas) [1993] 2 Lloyd’s Rep 445, 451-452, even an express choice of jurisdiction does not by itself give rise to an implied choice of law. We therefore do not consider that a choice of the seat of arbitration can by

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itself be construed as an implied choice of the law applicable to the arbitration agreement.

VIII Applying the closest connection test

118. So far we have been considering the question whether the parties to a contract have chosen the law applicable to the arbitration agreement, either specifically or by choosing a system of law to govern the contract as a whole including the arbitration agreement. We now turn to the situation in which no such choice has been made. As discussed earlier (see para 36 above), the court must in these circumstances determine, objectively and irrespective of the parties’ intention, with which system of law the arbitration agreement has its closest connection. This exercise is different in nature from the attempt to identify a choice (whether express or implied), as it involves the application of a rule of law and not a process of contractual interpretation.

119. Even where the parties have not agreed what law is to govern their contract, it is reasonable to start from an assumption - for reasons given earlier - that all the terms of the contract, including an arbitration clause, are governed by the same system of law. Where, however, the parties have selected a place for the arbitration of disputes, there is authority for, as a general rule, regarding the law with which the arbitration agreement is most closely connected as the law of the seat of arbitration. As we have seen, this was the approach adopted by the Court of Appeal in the Sulamérica case (see para 104 above). It was also endorsed by the Court of Appeal in C v D (see para 48 above), albeit that in that case insufficient reason was given, in our opinion, for rejecting the inference that the law chosen to govern the insurance contract was intended to apply to the arbitration clause. Among commentators, this rule notably has the support of Dicey, Morris & Collins on The Conflict of Laws, 15th ed (2012), rule 64(1)(b) and para 16-016; see also Russell on Arbitration, 24th ed, (2015) at para 2-121.

120. There are a number of reasons of principle and policy which in our opinion justify as a general rule regarding the law of the place chosen as the seat of arbitration as the law most closely connected with the arbitration agreement which in the absence of choice will apply by default.
(i) The place of performance
121. The starting point is that the seat of arbitration is the place where (legally, even if not physically) the arbitration agreement is to be performed. In identifying the system of law with which a contract (or relevant part of it) has its closest and

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most real connection, the place where the transaction is to be performed is the connecting factor to which the common law has long attached the greatest weight (since the place where the contract was concluded ceased to be seen as significant): see eg Dicey, Morris & Collins on The Conflict of Laws, 15th ed (2012), para 32-073. This is justified by the fact that states have an interest in regulating transactions taking place within their territory and by the consequent natural assumption that the law of the territory in which a transaction is taking place will govern it in the absence of a contrary indication. By agreeing to a seat of arbitration the parties submit themselves to the jurisdiction of the courts of that place and to its law and coercive powers for the purposes of deciding any issue relating to the validity or enforceability of their arbitration agreement. Thus, as we discuss later in this judgment (see Part XI below), the courts of the seat have jurisdiction to grant an injunction to restrain proceedings brought in breach of the agreement to arbitrate. The parties also by their choice of seat impliedly agree to bring any claim for a remedy relating to the existence or scope of the arbitrators’ jurisdiction (including any issue as to the validity or scope or the arbitration agreement), and any challenge to an arbitral award, in the courts of that place: see C v D [2007] EWHC 1541 (Comm); [2007] 2 All ER (Comm) 557, paras 29-34 (Cooke J); C v D [2007] EWCA Civ 1282; [2008] Bus LR 843, para 17 (CA); Minister of Finance (Inc) v International Petroleum Investment Co [2019] EWCA Civ 2080; [2020] Bus LR 45, paras 36-49; Dicey, Morris & Collins on The Conflict of Laws, 15th ed (2012), para 16-036. The seat of arbitration is in these circumstances the place to whose system of law the arbitration agreement is most closely attached.

122. By contrast, there is no reason to regard the place of performance of the substantive obligations created by the contract as a significant connection for the purpose of determining the law applicable to the arbitration agreement (as opposed to for the purpose of determining what law the arbitrators should apply in deciding a dispute). This is because (as noted at para 40 above) the subject matter and purpose of an arbitration agreement are different from those of the contract in which it is incorporated. The irrelevance of the place of performance of the main contract is illustrated by the fact that seats of arbitration are frequently chosen which have no connection with where the parties’ substantive obligations are to be performed (or otherwise with the contract) and sometimes precisely because they have no such connection. Other factors connecting the main contract to a country or its laws are equally irrelevant in regard to the arbitration agreement. For example, article 4 of the Rome I Regulation adopts a presumption that the contract is most closely connected with the country where the party required to effect the characteristic performance of the contract has his habitual residence. There is no reason to regard this as a factor which should have any bearing on the law applicable to the arbitration agreement.

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123. We therefore agree with the view of Moore-Bick LJ in the Sulamérica case quoted at para 104 above and also with statement of Longmore LJ in C v D [2007] EWCA Civ 1282; [2008] Bus LR 843, para 26, that:

“an agreement to arbitrate will normally have a closer and more real connection with the place where the parties have chosen to arbitrate than with the place of the law of the underlying contract in cases where the parties have deliberately chosen to arbitrate in one place disputes which have arisen under a contract governed by the law of another place.”

124. We do not consider that the importance of the connection between the law governing the arbitration agreement and the law of the seat is undermined by the fact that some national laws, such as the Arbitration Act 1996 in England and Wales, allow the parties a wide degree of freedom to make their own arrangements, either by choosing another system of law to govern their arbitration agreement or arbitral procedure (see section 4(5) of the 1996 Act, discussed earlier) or by agreeing to the application of institutional rules made by an arbitral body such as the ICC (see section 4(3) of the 1996 Act). The extent to which the parties are free to make such arrangements is itself a matter for the law of the seat. Furthermore, any national law is likely to include mandatory provisions, described in section 1(b) of the 1996 Act as “such safeguards as are necessary in the public interest,” which have effect notwithstanding any agreement to the contrary. As noted earlier, in the 1996 Act these include sections 66 to 68, which govern any challenge to an award made in England including any challenge to the substantive jurisdiction of the arbitrators on grounds that the arbitration agreement is invalid or unenforceable or does not cover the dispute referred to arbitration. Such provisions of themselves establish a close nexus between the law determining the validity and scope of the arbitration agreement and the law of the seat of arbitration.
(ii) Consistency with international law and legislative policy
125. A second, and in our view compelling, reason for treating an arbitration agreement as governed by the law of the seat of arbitration in the absence of choice is that such a rule accords with international law as embodied in the 1958 New York Convention and other international instruments, as well as with the national law which gives effect to the New York Convention in England and Wales.

126. The New York Convention, to which the United Kingdom became a party in 1975 and which more than 160 states have now signed, has been described as “the single most important pillar on which the edifice of international arbitration rests,” and as “perhaps … the most effective instance of international legislation in the

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entire history of commercial law”: see Redfern and Hunter: Law and Practice of International Commercial Arbitration, 6th ed (2015), para 2.11, quoting Wetter, “The present status of the International Court of Arbitration of the ICC: An appraisal” (1990) 1 Am Rev Intl Arb 91, p 93, and Mustill, “Arbitration: History and background” (1989) 6 J Intl Arb 43, p 49. The essential aim of the Convention was to establish a single uniform set of international legal standards for the recognition and enforcement of arbitration agreements and awards. Its success is reflected in the fact that, according to Born, International Commercial Arbitration, 2nd ed (2014), p 113, the New York Convention has been implemented through national legislation in virtually all contracting states.

127. Article V(1)(a) of the Convention specifies, among the limited circumstances in which recognition or enforcement by the courts of a Convention state of an award made in another Convention state may be refused, proof that the arbitration agreement “is not valid under the law to which the parties have subjected it or, failing any indication thereon, under the law of the country where the award was made”. As stated in Dicey, Morris & Collins on The Conflict of Laws, 15th ed (2012), para 16-014:

“In the light of the pervasive reach of the New York Convention in modern times, this rule, although not itself prescribing a choice of law rule of general application, nevertheless provides a strong indication of one…”

128. Article V(1)(a) - enacted into English law by section 103(2)(b) of the Arbitration Act 1996 - has two limbs, which are intended to be treated as uniform international conflict of laws rules: see Dallah Real Estate and Tourism Holding Co v Ministry of Religious Affairs of the Government of Pakistan [2008] EWHC 1901 (Comm); [2009] 1 All ER (Comm) 505, para 78 (Aikens J); and [2010] UKSC 46; [2011] 1 AC 763, para 123 (Lord Collins). The first, and primary, rule is that the validity of the arbitration agreement is governed by “the law to which the parties [have] subjected it” - in other words the law chosen by the parties. The second, default rule, which applies where no choice has been indicated is that the applicable law is that of “the country where the award was made”. Where the parties have chosen the seat of arbitration, this will be (or be deemed to be) the law of the seat. In English law this is expressly provided by section 100(2)(b) of the 1996 Act.

129. There is a division of opinion among commentators over whether the first limb of article V(1)(a) applies only where there is an express choice of law to govern the arbitration agreement or whether it also encompasses a choice that is implied - for example from a choice of law to govern the contract in general: compare van den Berg, The New York Arbitration Convention of 1958 (1981), p 293 and Born, International Commercial Arbitration, 2nd ed (2014), pp 564-565. We think the

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latter is the better view. As discussed earlier, a choice of law for the arbitration agreement may be clearly indicated by a choice of law for the contract of which it forms part and a choice conveyed impliedly is just as much a choice entitled to respect in accordance with the principle of party autonomy as a choice stated expressly. Furthermore, the broader interpretation is supported by the language of article V(1)(a), which applies the default rule only failing “any indication” of the law to which the parties have subjected the arbitration agreement.

130. Where proceedings are brought in a court of a contracting state in respect of a matter covered by an arbitration agreement to which the New York Convention applies, article II(3) of the Convention requires the court, at the request of one of the parties, to refer the parties to arbitration, unless the agreement “is null and void, inoperative or incapable of being performed.” Article II does not itself specify rules for identifying the law by which the validity of the arbitration agreement is to be determined. There is, however, a strong and widely accepted argument that the Convention is to be interpreted as requiring the same conflict rules to be applied in relation to article II(3) as are specifically required at the stage of enforcement by article V(1)(a). Thus, Professor van den Berg, a leading authority on the New York Convention, has written:

“A systematic interpretation of the Convention, in principle, permits the application by analogy of the conflict rules of article V(1)(a) to the enforcement of the agreement. It would appear inconsistent at the time of the enforcement of the award to apply the Convention’s uniform conflict rules and at the time of the enforcement of the agreement to apply possibly different conflict rules of the forum. It could lead to the undesirable situation of the same arbitration agreement being held to be governed by two different laws: one law determined according to the conflict rules of the forum at the time of the enforcement of the agreement, and the other determined according to article V(1)(a) at the time of enforcement of the award.”

van den Berg, The New York Arbitration Convention of 1958 (1981), p 126-7; and see Born, International Commercial Arbitration, 2nd ed (2014), pp 494, 495-499; Lew & Mistelis, Comparative International Commercial Arbitration (2003), para 6-55; Schramm, Geisinger & Pinsolle, “Article II” in Kronke, Nacimiento et al (eds), Recognition and Enforcement of Foreign Arbitral Awards: A Global Commentary on the New York Convention (2010), p 55.

131. This approach is also supported by other international instruments. The 1961 European Convention on International Commercial Arbitration adopts the conflict rules set out in article V(1)(a) of the New York Convention and, by article

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VI(2), provides for those rules to be applied at any stage when a court of a contracting state is required to rule on the existence or validity of an arbitration agreement - in other words, whether the question arises pre- or post-award.

132. Article 36 of the Model Law adopted by the United Nations Commission on International Trade Law (UNCITRAL) on 21 June 1985 parallels article V of the New York Convention in its list of grounds (set out in article 36) on which recognition or enforcement of an arbitral award may be refused. The Model Law takes this a step further in article 34 by restricting any challenge to an arbitral award to an application brought in the state in which the award was made and by limiting the grounds on which an award may be set aside to those on which recognition or enforcement of a foreign award may be refused.

133. The primary reason for the exclusion of arbitration agreements from the Rome I Regulation was that such agreements were already adequately regulated by international conventions: see McParland, The Rome I Regulation on the Law Applicable to Contractual Obligations (2015), paras 7-126 - 7-127. The exclusion can accordingly be seen as a recognition of the fact that arbitration agreements are already subject to international uniform conflict rules derived, in particular, from the 1958 New York Convention and the 1961 European Convention.

134. Although the United Kingdom has not signed the 1961 European Convention and has not in all respects adopted the UNCITRAL Model Law, the rules laid down in article V of the New York Convention (and article 36 of the Model Law) relating to the recognition or enforcement of awards have been directly incorporated into English law by section 103 of the 1996 Act. Thus, under section 103(2)(b) the grounds on which recognition or enforcement of an award made in another Convention state may be refused include proof that:

“the arbitration agreement was not valid under the law to which the parties subjected it or, failing any indication thereon, under the law of the country where the award was made;”

135. While this provision only applies directly in proceedings brought to enforce an award made in another Convention state, it would be illogical to apply different conflict rules to determine which law governs the validity of the arbitration agreement where the arbitration is seated (and the award therefore treated as made) in England. Thus, in cases where the parties have not chosen the law of the arbitration agreement but have chosen the seat of arbitration, it would be illogical if the English courts were to treat the validity of the arbitration agreement as governed by the law of the seat if the parties have chosen a foreign seat but by the law of the main contract if they have been chosen an English seat of arbitration. Such an

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approach would be all the more incoherent given that, if proceedings were brought in another Convention state to enforce an award made in England, the foreign court would apply the law of the seat (and not the law of the main contract, if different) to determine the validity of the award as required by article V(1)(a) of the Convention.

136. As pointed out by Professor van den Berg in the passage quoted at para 130 above, it would be equally illogical if the law governing the validity of the arbitration agreement were to differ depending on whether the question of validity is raised before or after an award has been made. To ensure consistency and coherence in the law, the same law should be applied to answer the question in either case. Again, the incoherence that would result if English common law were to adopt a different conflict rule from the New York Convention’s uniform rule would be compounded when the international perspective is considered. As one commentator has observed:

“It is fair to say that today, the conflict rule contained in article V(1)(a) New York Convention … has developed into a truly transnational conflict rule for the determination of the law governing the substantive validity of the arbitration agreement. This rule has been applied in numerous international arbitral awards, is favoured by international arbitral doctrine and has been accepted by domestic courts.”

See Berger, “Reexamining the Arbitration Agreement: Applicable Law - Consensus or Confusion?”, in Van den Berg (ed), (2006) ICCA Congress Series Vol 13, 301, pp 316-317. It is not desirable that, when a question about the enforceability of the same arbitration agreement arises in different national courts, different conflict rules should be applied to determine the governing law. This point is well made by Gary Born in his work on International Commercial Arbitration, 2nd ed (2014), p 498:

“The international arbitral process aspires towards a maximally uniform approach by national courts presented with disputes about the substantive validity of a particular international arbitration agreement. A lack of uniformity on this issue would result in some courts referring parties to arbitration, and others refusing to do so, under the same arbitration agreement; that makes no sense and results in unnecessary litigation, forum shopping and uncertainty. Rather, insofar as possible, it is much more desirable for all national courts to reach the same conclusion as to the validity (or invalidity) of a particular arbitration agreement.”

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Exactly the same points apply to the approach taken by national courts to the scope of an international arbitration agreement.

137. As with questions of validity, issues about whether a dispute falls within the scope of the arbitration agreement may arise at any stage from when a party wishes to refer a dispute to arbitration to the stage of seeking to enforce an award. Article V(1)(c) of New York Convention provides that recognition and enforcement may be refused if “[t]he award deals with a difference not contemplated by or not falling within the terms of the submission to arbitration, or it contains decisions on matters beyond the scope of the submission to arbitration …”. Section 103(2)(d) of the 1996 Act contains an almost identical provision, as does article 36(i)(a)(iii) of the UNCITRAL Model Law and article IX(1)(c) of the European Convention.

138. The general approach in the conflict of laws, adopted by both the common law and the Rome I Regulation, is to treat the validity and scope of a contract (as well as other issues such as the consequences of breach and ways of extinguishing obligations) as governed by the same applicable law. This makes good sense, not least because the boundary between issues of validity and scope is not always clear. Thus, it is logical to apply the law identified by the conflict rules prescribed by article V(1)(a) of the New York Convention and section 103(2)(b) of the 1996 Act to questions about the scope or interpretation of the arbitration agreement as well as disputes about its validity.

139. This also accords with the approach taken by the American Law Institute in the final draft of the Restatement (Third) of the US Law of International Commercial and Investor-State Arbitration (24 April 2019). Section 2.14 of the draft Restatement recommends a rule that a court should determine whether an international arbitration agreement is null and void in accordance with: (1) the law to which the parties have subjected the arbitration agreement; or (2) in the absence of such a choice of law, the law of the seat of arbitration. This approach is consistent with article V(1)(a) of the New York Convention. The comment on the applicable law explains:

“On balance, the present section favors ensuring symmetry between pre-arbitration and post-award standards for determining the validity of an arbitration agreement. There is no reason in principle why a court should answer that question differently depending on the stage of the proceedings, and doing so would inject unnecessary uncertainty and complexity into the analysis.”

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140. Section 2.15 of the draft Restatement adopts the same rule for the purpose of determining whether a matter falls within the scope of an arbitration agreement, taking the position that the law applicable to determining the scope of an agreement to arbitrate should parallel the law applicable to determining whether the agreement is valid.

141. Accordingly, whatever merit there might be, if one were designing a system of law from scratch, in a conflicts rule which treated the law of the main contract as applicable to the arbitration agreement in the absence of choice, it would in our view be wrong for the English common law to adopt a rule out of step with both the legislative policy of the 1996 Act and the underlying uniform rule established by the New York Convention. The court should apply the same conflict rules to identify the governing law irrespective of whether the arbitration has a domestic or foreign seat and irrespective of the stage at which an issue about the validity or scope of the arbitration agreement is raised. Internal coherence of English law, as well as harmony with international law and practice, is achieved by treating the applicable law in all cases, in the absence of a choice by the parties, as the law of the seat of arbitration.
(iii) Giving effect to commercial purpose
142. A third reason for applying the law of the seat as a default rule is that it is likely to uphold the reasonable expectations of contracting parties who have chosen to settle their disputes by arbitration in a specified place but made no choice of law for their contract. This is particularly so where, as is often the case in contracts made between parties of different nationalities, a popular seat of international arbitration has been chosen as a neutral forum with which neither party is connected. In such circumstances, if the parties had been required to make a common choice of law to govern their arbitration agreement at the time of contracting, it is inherently unlikely that they would have agreed on either of their national systems of law and much more likely that they would have settled on the law of the place which they had chosen as the seat of arbitration. Not only does this provide a neutral choice of law but it is already the law of that place which - in countries which have implemented the Model Law or are parties to the New York Convention - will determine the validity of an award if an application is made to set it aside or if its enforcement in the other party’s home state is resisted.

143. Countries frequently chosen as neutral seats of arbitration can also be expected to have legal regimes which are supportive of arbitration and which seek to give effect to the parties’ intention that they do not wish to have their disputes decided by a court. That is the case for all the most preferred seats of international arbitration - which, according to the most recent 2018 international arbitration survey conducted by the School of International Arbitration at Queen Mary

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University of London, are London, Paris, Singapore, Hong Kong and Geneva. As discussed earlier, it is reasonable to assume that parties who have chosen to settle their disputes by international arbitration want an arbitration that resolves all (and not only some) disputes through an award that is binding and enforceable and which is immune from collateral attacks, particularly in the home country of one of the parties. As a general rule, applying the law of the chosen seat of arbitration is calculated to achieve that purpose.
(iv) Legal certainty
144. Finally, there is merit is recognising a clear default rule in the interests of legal certainty. Applying a general rule that, in the absence of choice, an arbitration agreement is governed by the law of the seat of arbitration (where a seat has been designated) enables the parties to predict easily and with little room for argument which law the court will apply by default. The benefits of certainty are further enhanced if the same law is applied irrespective of the country in which the proceedings are brought and whether the question of the validity or scope of the arbitration agreement is raised before or after an award has been made. Certainty might not be a sufficient reason to recognise a clear and uniform rule if the rule interfered with party choice. But here there is no risk of such interference because we are concerned with the situation in which the parties have not exercised their freedom to choose the law to be applied so that the court must make the selection for them. It is desirable that parties should be able to know with certainty what law a court will apply in this situation. If they do not like the default option, they can always choose a system of law that they prefer.
(v) Conclusion on the default rule
145. Chubb Russia did not argue against the contention that the law most closely connected with the arbitration agreement, which in the absence of choice will apply by default, will in general be the law of the seat of the arbitration. Indeed, leading counsel for Chubb Russia at one point in oral argument volunteered the suggestion that an appropriate default rule would be that the arbitration agreement is governed by the law of the seat. He noted that such a rule would have the advantages of certainty and consistency with article V(1)(a) of the New York Convention. Counsel later withdrew that suggestion and in reaching our conclusion on this issue we have placed no reliance on the fact it was made. But it was in our view no more than a realistic acknowledgement of the overwhelming case for recognising such a general rule.

146. A case can be made for recognising an exception to the ordinary default rule where the arbitration agreement would be invalid under the law of the seat but not

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under the law governing the rest of the contract: see eg Merkin & Flannery on The Arbitration Act 1996, 6th ed (2019), para 46.10.5 and Born, International Commercial Arbitration, 2nd ed (2014), pp 542-549; for a contrary view, see Glick and Venkatesan, “Choosing the Law Governing the Arbitration” Agreement’ in Kaplan and Moser (eds), Jurisdiction, Admissibility and Choice of Law in International Arbitration: Liber Amicorum Michael Pryles (2018), Chapter 9, pp 148-149. Since the issue does not arise in the present case, it is not necessary to decide whether such an exception should be recognised. Even if there be no such exception, where the law of the seat is English law an arbitration agreement will only be invalid in limited circumstances and for good reason. Where the law of the seat is not English law, an award made under an arbitration agreement invalid under that law is liable in any event to be set aside by the courts of the seat, whose decision would normally be followed by the English courts: see the discussion by Lord Mance in “Arbitration - a law unto itself?” (2016) 32 Arbitration International 223. There can also be cases where no seat has been designated, where it may be appropriate to apply the law applicable to the rest of the contract. But such exceptional cases apart, we consider that the law of the seat will apply by default.

IX The law applicable to the arbitration agreement in article 50.1

147. Applying the principles discussed above to the present case, it is common ground that the parties have not chosen a system of law specifically to govern the arbitration agreement contained in article 50.1 of the construction contract. Chubb Russia, however, contends that the parties have chosen Russian law to govern the contract as a whole including the arbitration agreement. Enka disputes this. Enka accepts that the main body of the construction contract is governed by Russian law but maintains that this is so only because of the connections between the construction contract and the law of Russia and not as a matter of choice.
(i) No choice of law
148. The first thing to note is that the construction contract does not contain a choice of governing law clause. Amongst almost 100 pages of primary text and another 400 pages of appendices, there is no provision which says that the contract shall be governed by or interpreted in accordance with a specified system of law. In a detailed and professionally drafted commercial contract made between substantial organisations based in different countries, such a clause is an entirely standard clause, almost invariably included along with a clause specifying the forum in which any dispute is to be resolved. It is difficult to conceive that the omission of such a clause in this case - despite the inclusion of a detailed provision dealing with the resolution of disputes - was accidental. We agree with counsel for Enka that an obvious explanation for its absence is that the parties were not able to agree on a choice of the governing law.

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149. Chubb Russia contends that a choice of Russian law can nonetheless be discerned from the use in the construction contract of the term “Applicable Law”, taken together with the definition of that term in Attachment 17 as:

“Law of the Russian Federation, including legislation of the Russian Federation, all regulatory legal acts of the State Authority Federal Bodies, State Authorities of the constituent entities of the Russian Federation, legislation of the constituent entities of the Russian Federation, regulatory legal acts by Local Authorities and any other applicable regulatory legal acts.”

There are numerous references throughout the body of the contract to the “Applicable Law”, as well as other references to the law or laws of the Russian Federation. Counsel for Chubb Russia submitted that, read as a whole, the language of the construction contract makes it clear that the parties were contracting by reference to Russian law and chose Russian law as the law applicable to their agreement.
150. Had it been the parties’ choice, however, that the construction contract should be governed by the “Applicable Law” as defined in Attachment 17, it would have been simple to say so. Yet, as noted, there is no clause which states this. Rather, the term “Applicable Law” is used in specific provisions of the contract which impose obligations on the contractor to comply with laws and regulations applicable in the country where the construction work was to take place. As the Court of Appeal observed (at para 107), it is a common technique in international construction contracts to define such an applicable law or laws and to impose an obligation to comply with them separately from any choice of the law that is to govern the validity and interpretation of the parties’ contractual rights and obligations.

151. As evidence of this practice, the Court of Appeal cited a leading text on the widely used standard forms of international construction contract issued by the International Federation of Consulting Engineers (“FIDIC”): see Baker Mellors Chalmers and Lavers on FIDIC Contracts: Law and Practice, 5th ed (2009), paras 2.126, 2.140 and 2.145. Counsel for Chubb Russia pointed out that the contract in this case was not made on a FIDIC standard form and, unlike contracts made on FIDIC forms, does not contain a governing law clause. They observed that the technique employed in drafting FIDIC contracts is to select a governing law and then to apply a different law (usually the local law) expressly to certain provisions in such a way that the contractor will be obliged to comply with that law. That was not done here, where the only law specified was the “Applicable Law”.

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152. The drafting technique to which the Court of Appeal referred is not, however, peculiar to FIDIC standard forms. Authoritative texts cited by counsel for Enka confirm that other standard forms of international construction contract also typically include provisions which require the contractor to comply with applicable laws or with laws of the country where the works are carried out: see Huse, Understanding and Negotiating Turnkey and EPC Contracts, 4th ed (2020), paras 4-110 - 4-112; Bailey, Construction Law, 2nd ed (2016), para 18.11. The clear purpose of such provisions is to protect the employer against the risk of incurring liability through failure by the contractor to comply with local laws such as building regulations, health and safety and environmental laws, tax laws and other applicable regulatory requirements. The rationale for including such provisions is not affected by the presence or absence of a governing law clause in the contract.

153. There is no necessary inference that the validity and interpretation of a contractual obligation requiring compliance with a law or laws of a particular country is itself to be determined by applying the contract law of that country. This is underlined by the point which Chubb Russia itself makes that the law chosen to govern a contract made on a FIDIC standard form (or, we would add, other forms of international construction contract) may and often does differ from the “applicable” law with which the contractor is required to comply in performing the contract. In any case the contractual obligations of Enka were not limited to compliance with the “Applicable Law”. Article 4.1 of the construction contract provides:

“The Contractor shall ensure performance of the Work in accordance with:

a) The requirements of this Agreement (including references to the non-mandatory rules of Applicable Law but to the extent the provisions of the Agreement are not at variance with mandatory rules of Applicable Law);

b) Applicable Law (including the Mandatory Technical Rules constituting a part of such Applicable Law);

c) An Implied Covenant of Good Faith and Fair Dealing.”

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The definition in Attachment 17 of the phrase “Implied Covenant of Good Faith and Fair Dealing” imports standards applied by “experienced international contractor organisations” engaged in similar projects. As well as such standards, the construction contract and its attachments set out many specific requirements for the work which do not form part of the “Applicable Law”.

154. Quite apart from this, there are numerous rights and obligations established by the construction contract which make no reference to the “Applicable Law” (or to laws of the Russian Federation). Examples are clauses dealing with the consequences of delay (article 26), force majeure (article 31), payment of the price (article 33) and termination (article 43).

155. In these circumstances, it cannot be said that the parties have in the construction contract expressly selected a system of law to govern the validity and interpretation of their contractual obligations nor that the terms of the contract construed in their context point ineluctably to the conclusion that the parties intended Russian law to apply. To the contrary, the obvious inference from the fact that the parties have not anywhere in the contract stated what system of law is to govern any of their contractual obligations - as opposed to creating obligations to comply with applicable laws - is that they have not agreed (for whatever reason) on a choice of governing law. This inference applies to the arbitration agreement as much as to the rest of the contract.
(ii) Closest connection
156. In the absence of any choice of the law that is to govern the arbitration agreement, it is necessary to fall back on the default rule and identify the system of law with which the arbitration agreement is most closely connected. In accordance with our earlier analysis, this will generally be the law of the seat chosen by the parties, which in this case is London.

157. As already mentioned, Chubb Russia did not actively oppose this conclusion if it is necessary to identify the law with which the arbitration agreement is most closely connected. Chubb Russia’s case has been put solely on the basis that the parties chose Russian law as the law governing the contract including the arbitration agreement. No alternative argument has been advanced that, if this is wrong, Russian law nevertheless applies as the law most closely connected with the arbitration agreement.

158. Chubb Russia has put forward an argument, however, about the proper interpretation of particular terms of the construction contract which it remains

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relevant to consider. This argument is that the agreement to arbitrate disputes is embedded in a clause of the contract (article 50) dealing with dispute resolution which contains other obligations in addition to the obligation to arbitrate and which itself is, as Mr Bailey QC put it, “buried deep inside” the contract and inextricably connected to other provisions of it. It is said that in these circumstances the parties must have intended all the obligations in article 50, including the arbitration agreement, to be governed by the same system of law as each other and as the rest of the contract. For the purpose of this argument, it is necessary to determine the law applicable to the main body of the construction contract. As discussed earlier, for that purpose the court must apply the Rome I Regulation.
(iii) The law applicable to the main contract
159. Although it would be a mistake to interpret the Rome I Regulation through the prism of the common law, there does not appear to be any substantial difference (save possibly in relation to the admissibility of subsequent conduct) between the approach of the common law to determining whether there has been an express or implied choice of law and the approach to be followed in deciding whether a choice has been made expressly or “clearly demonstrated” for the purpose of article 3 of the Rome I Regulation. Thus, in Lawlor v Sandvik Mining and Construction Mobile Crushers and Screens Ltd [2013] EWCA Civ 365; [2013] 2 Lloyd’s Rep 98, para 33, the Court of Appeal held that the test of whether a choice has been “clearly demonstrated” is objective and is equivalent to Lord Diplock’s formulation of the common law test, requiring the court to be satisfied that the only reasonable conclusion to be drawn from the circumstances is that the parties should be taken to have intended the putative law to apply.

160. For the reasons already given when considering the position at common law, the parties have not in this case expressly made or clearly demonstrated a choice of law to govern the construction contract but are, as it seems to us, reasonably to be understood as having not agreed on a choice of law. The governing law is therefore to be determined by applying article 4 of the Rome I Regulation.

161. Under the construction contract Enka was engaged to install a boiler and auxiliary equipment, with the equipment and materials (except for consumable materials) to be supplied by Energoproekt as customer. The contract was therefore, at least predominantly, a contract for the provision of services by Enka. Article 4(1)(b) of the Rome I Regulation establishes a prima facie rule that, to the extent that the law applicable to it has not been chosen in accordance with article 3, a contract for the provision of services shall be governed by the law of the country where service provider “has his habitual residence”. This rule points towards the law of Turkey as the country where the contractor, Enka, had its place of central administration and therefore habitual residence (see article 19(1)). However, the

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other party to the contract, Energoproekt, was a Russian company, as was the “End Customer”, Unipro. The contract was for the performance of construction work in Russia and required compliance with Russian laws and regulations. It is written in the Russian language (as the authoritative version); notifications under it were likewise required to be written in Russian and English but with the Russian version taking precedence and, when sent to the contractor, were to be sent to its Moscow office. The price for the work, although calculated in US dollars, was to be paid in roubles to a Russian bank account. The fact that the dispute resolution clause provides for arbitration in London is not a sufficient connection to indicate that English law should govern the contractual obligations of the parties. It is clear from all the circumstances of the case that the main body of the construction contract is manifestly more closely connected with Russia than with any other country. Pursuant to article 4(3) of the Rome I Regulation, it is therefore governed by Russian law.
(iv) The dispute resolution clause
162. Chubb Russia’s argument that the arbitration agreement cannot reasonably be detached from the rest of the contract in terms of its governing law has two aspects. The first is that article 50.1, which contains the arbitration agreement, must be governed by a single law. The second is that it makes no sense for that law to differ from the law applicable to the rest of the construction contract.

163. Article 50.1 sets outs a series of procedures of increasing formality which the parties have agreed to follow for resolving any dispute, with arbitration being the last resort. Thus, where a “Dispute” as defined in the first sentence of article 50.1 arises, the parties are first of all obliged to “make in good faith every reasonable effort” to resolve it by negotiations. If the Dispute is not resolved within ten days of either party sending a “Notification” (a term defined in article 51.2 of the contract) to the opposite party containing an indication of the Dispute, either party may then give a written notice causing it to be referred to a meeting between the parties’ senior managements. It is only if the matter is not resolved within a further 20 calendar days that the obligation arises to refer the Dispute to international arbitration.

164. Enka accepts that article 50.1 can only reasonably be interpreted as governed by a single system of law, as it is clearly intended to establish a single, staged dispute resolution process and it would make no sense for the meaning or scope of a “Dispute” as defined in the earlier part the clause to be determined by applying a different system of law from the law governing the validity and scope of the obligation to arbitrate. But it is Enka’s case that the implication in terms of governing law flows in the opposite direction from that contended for by Chubb Russia, and that it follows from the identification of English law as the law which (on Enka’s case) governs the arbitration agreement that English law applies to the

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whole of article 50.1. That conclusion should be reached, Enka contends, either by applying the common law rules to the whole of article 50.1 on the basis that the whole of that clause constitutes an “arbitration agreement” within the meaning of article 1(2)(e) of the Rome I Regulation or by applying the principle of dépeçage and treating article 50.1 as a severable part of the contract for the purpose of the Rome I Regulation.

165. Mr Bailey QC for Chubb Russia drew attention to connections between article 50.1 and other parts of the contract: in particular the use of capitalised terms such as “Notification” which are defined elsewhere. He also pointed out that article 42.2 of the contract includes provision for referring disputes arising out of the operation of the change control procedure to arbitration pursuant to article 50. He submitted that the dispute resolution clause is not hermetically sealed from the rest of the contract but is inextricably bound up with it, and that this points strongly to the conclusion that the arbitration agreement and the other obligations contained within the contract must all be governed by the same system of law.

166. This contention could be formulated on the basis of implied choice or by reference to the closest connection test. As to the former, no doubt parties could in principle agree that the whole of their contract, including an arbitration agreement within it, should be governed by a single system of law even though they have not agreed on what that law should be. But this does not seem to us an inherently likely agreement for contracting parties to make. To establish such an agreement a clearer demonstration of intent would be necessary than the mere fact that the arbitration agreement forms part of a wider dispute resolution clause which is referred to elsewhere and uses terms defined elsewhere in the contract.

167. In terms of connections, we agree with both parties that article 50.1 makes sense only as an integrated whole governed by one system of law. But we do not regard the connections to which Chubb Russia drew attention between article 50.1 and the rest of the contract as particularly strong or sufficient to require the application of the same law in circumstances where no choice of law has been made by the parties. There is no difficulty in principle in using within a contract or clause of a contract governed by a particular system of law a term defined in another part of the contract or in a separate instrument governed by a different system of law. In such a case the term will carry its defined meaning by agreement. The reference in article 50.1 to a “Notification” can readily operate in this way. Likewise, the cross-reference in article 42.2 of the construction contract to the dispute resolution clause does not require both clauses to be governed by the same system of law.

168. It has become increasingly common for commercial parties to include in their contracts provisions which require other forms of dispute resolution, such as good faith negotiation or mediation, to be undertaken without success before a dispute is

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referred to arbitration. We find it difficult to see how, as a matter of principle or policy, the fact that such an approach is adopted can justify the application of a different law to determine the validity or scope of the arbitration agreement. All the reasons that we have identified for, as a general rule, regarding the law governing the arbitration agreement in the absence of choice as the law of the seat of arbitration apply equally and with equal force where the arbitration agreement is contained in a wider dispute resolution clause (or integrated set of clauses) as where it is self-contained. We do not think that reasonable commercial parties would expect the law applied to determine the validity and scope of their arbitration agreement to depend on which form of dispute resolution procedure is chosen. Rather, it is reasonable to expect that, where a multi-tiered procedure is chosen, the law which determines the validity and scope of the arbitration agreement will determine the validity and scope of the whole dispute resolution agreement.

169. The fact that two conflict of laws regimes are potentially in play complicates the analysis but provides no reason to alter the result. Where, as in this case, an obligation to arbitrate disputes is embedded in a single dispute resolution agreement which provides for other steps to be undertaken before the obligation to arbitrate arises, we do not think it unreasonable to regard the whole dispute resolution agreement as an “arbitration agreement” for the purpose of article 1(2)(e) of the Rome I Regulation. On this basis, applying the common law conflict of laws rules, article 50.1 of the construction contract is governed by English law.

X Conclusions on applicable law

170. It may be useful to summarise the principles which in our judgment govern the determination of the law applicable to the arbitration agreement in cases of this kind:

i) Where a contract contains an agreement to resolve disputes arising from it by arbitration, the law applicable to the arbitration agreement may not be the same as the law applicable to the other parts of the contract and is to be determined by applying English common law rules for resolving conflicts of laws rather than the provisions of the Rome I Regulation.

ii) According to these rules, the law applicable to the arbitration agreement will be (a) the law chosen by the parties to govern it or (b) in the absence of such a choice, the system of law with which the arbitration agreement is most closely connected.

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iii) Whether the parties have agreed on a choice of law to govern the arbitration agreement is ascertained by construing the arbitration agreement and the contract containing it, as a whole, applying the rules of contractual interpretation of English law as the law of the forum.

iv) Where the law applicable to the arbitration agreement is not specified, a choice of governing law for the contract will generally apply to an arbitration agreement which forms part of the contract.

v) The choice of a different country as the seat of the arbitration is not, without more, sufficient to negate an inference that a choice of law to govern the contract was intended to apply to the arbitration agreement.

vi) Additional factors which may, however, negate such an inference and may in some cases imply that the arbitration agreement was intended to be governed by the law of the seat are: (a) any provision of the law of the seat which indicates that, where an arbitration is subject to that law, the arbitration will also be treated as governed by that country’s law; or (b) the existence of a serious risk that, if governed by the same law as the main contract, the arbitration agreement would be ineffective. Either factor may be reinforced by circumstances indicating that the seat was deliberately chosen as a neutral forum for the arbitration.

vii) Where there is no express choice of law to govern the contract, a clause providing for arbitration in a particular place will not by itself justify an inference that the contract (or the arbitration agreement) is intended to be governed by the law of that place.

viii) In the absence of any choice of law to govern the arbitration agreement, the arbitration agreement is governed by the law with which it is most closely connected. Where the parties have chosen a seat of arbitration, this will generally be the law of the seat, even if this differs from the law applicable to the parties’ substantive contractual obligations.

ix) The fact that the contract requires the parties to attempt to resolve a dispute through good faith negotiation, mediation or any other procedure before referring it to arbitration will not generally provide a reason to displace the law of the seat of arbitration as the law applicable to the arbitration agreement by default in the absence of a choice of law to govern it.

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171. Applying these principles, we have concluded that the contract from which a dispute has arisen in this case contains no choice of the law that is intended to govern the contract or the arbitration agreement within it. In these circumstances the validity and scope of the arbitration agreement (and in our opinion the rest of the dispute resolution clause containing that agreement) is governed by the law of the chosen seat of arbitration, as the law with which the dispute resolution clause is most closely connected. We would therefore affirm - albeit for different reasons - the Court of Appeal’s conclusion that the law applicable to the arbitration agreement is English law.

172. We have not found it necessary to consider arguments made by Enka that, if the arbitration agreement were governed by the law of Russia as the place of performance of the construction project and country with which the parties’ substantive contractual obligations have their closest connection, there would be a serious risk that the parties’ intention of having their disputes finally settled by arbitration in a neutral forum would be defeated. This was disputed by Chubb Russia, but in the light of the conclusion we have reached there is no need to resolve this further issue.

XI The anti-suit injunction

173. If, as we have held, the arbitration agreement is governed by English law, Chubb Russia does not dispute that it was legitimate for the Court of Appeal to exercise its discretion whether to grant an anti-suit injunction afresh and does not contend that it erred in so doing. Its challenge to the order made by the Court of Appeal rests on the assumption that the arbitration agreement is governed by Russian law. Chubb Russia contends that the English courts ought in these circumstances to defer to the decision of the Russian courts on whether their dispute must be referred to arbitration or may be resolved by litigation in the Russian courts. On Chubb Russia’s case the English court’s approach to the grant of anti-suit injunctions should differ according to whether the arbitration agreement is governed by English law or a foreign law. As we have held that the arbitration agreement is governed by English and not Russian law, it is not necessary to address this further ground of appeal. Nevertheless, given that it has been fully argued and the importance of the issues raised, we shall briefly address it.

174. As already noted, by choosing a seat of arbitration the parties are choosing to submit themselves to the supervisory and supporting jurisdiction of the courts of that seat over the arbitration. A well established and well recognised feature of the supervisory and supporting jurisdiction of the English courts is the grant of injunctive relief to restrain a party from breaching its obligations under the arbitration agreement by bringing claims which fall within that agreement in court

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proceedings rather than, as agreed, in arbitration. A promise to arbitrate is also a promise not to litigate.

175. As explained by Lord Hoffmann in West Tankers Inc v RAS Riunione Adriatica di Sicurtà SpA (The Front Comor) [2007] UKHL 4; [2007] 1 Lloyd’s Rep 391, at paras 20-22:

“20. Of course arbitration cannot be self-sustaining. It needs the support of the courts … Different national systems give support in different ways and an important aspect of the autonomy of the parties is the right to choose the governing law and seat of the arbitration according to what they consider will best serve their interests.

21. The Courts of the United Kingdom have for many years exercised the jurisdiction to restrain foreign court proceedings as Colman J did in this case: see Pena Copper Mines Ltd v Rio Tinto Co Ltd (1911) 105 LT 846. It is generally regarded as an important and valuable weapon in the hands of a court exercising supervisory jurisdiction over the arbitration. It promotes legal certainty and reduces the possibility of conflict between the arbitration award and the judgment of a national court. … it saves a party to an arbitration agreement from having to keep a watchful eye upon parallel court proceedings in another jurisdiction, trying to steer a course between so much involvement as will amount to a submission to the jurisdiction … and so little as to lead to a default judgment. That is just the kind of thing that the parties meant to avoid by having an arbitration agreement.

22. Whether the parties should submit themselves to such a jurisdiction by choosing this country as the seat of their arbitration is, in my opinion, entirely a matter for them. The courts are there to serve the business community rather than the other way round. No one is obliged to choose London. The existence of the jurisdiction to restrain proceedings in breach of an arbitration agreement clearly does not deter parties to commercial agreements. On the contrary, it may be regarded as one of the advantages which the chosen seat of arbitration has to offer. ...”

176. In the same case Lord Mance stated at paras 31-32:

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“31. The purpose of arbitration (enshrined in most modern arbitration legislation) is that disputes should be resolved by a consensual mechanism outside any court structure, subject to no more than limited supervision by the courts of the place of arbitration. Experience as a commercial judge shows that, once a dispute has arisen within the scope of an arbitration clause, it is not uncommon for persons bound by the clause to seek to avoid its application. Anti-suit injunctions issued by the courts of the place of arbitration represent a carefully developed - and, I would emphasise, carefully applied - tool which has proved a highly efficient means to give speedy effect to clearly applicable arbitration agreements.

32. It is in practice no or little comfort or use for a person entitled to the benefit of a London arbitration clause to be told that (where a binding arbitration clause is being - however clearly - disregarded) the only remedy is to become engaged in the foreign litigation pursued in disregard of the clause. Engagement in the foreign litigation is precisely what the person pursuing such litigation wishes to draw the other party into, but is precisely what the latter party aimed and bargained to avoid.”

177. In granting an anti-suit injunction the English courts are seeking to uphold and enforce the parties’ contractual bargain as set out in the arbitration agreement. In principle it should make no difference whether that agreement is governed by English law or by a foreign law. In both cases the enquiry is whether there has been a breach of the arbitration agreement and whether it is just and convenient to restrain that breach by the grant of an anti-suit injunction. The detail of the enquiry may differ, but its nature is the same.

178. Chubb Russia contends that as a matter of discretion the considerations to be taken into account are different where the arbitration agreement is governed by foreign law. It submits that issues of scope and breach of the arbitration agreement are generally best left to the foreign court which has the requisite expertise in the applicable foreign law.

179. The judge’s view was that different considerations arise where the arbitration agreement is governed by foreign law by reason of the doctrine of forum conveniens. We agree with the Court of Appeal that forum conveniens, which is a matter that goes to the court’s jurisdiction, is not relevant. By agreeing to arbitrate in London the parties were agreeing to submit to the supervisory and supporting

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jurisdiction of the English courts, including its jurisdiction to grant anti-suit injunctions.

180. Chubb Russia’s principal argument is that considerations of comity nevertheless make it appropriate to defer to the foreign court as a matter of discretion. Comity, however, has little if any role to play where anti-suit injunctive relief is sought on the grounds of breach of contract. As Millett LJ stated in Aggeliki Charis Cia Maritima SA v Pagnan SpA (The Angelic Grace) [1995] 1 Lloyd’s Rep 87, 96:

“… in my judgment there is no good reason for diffidence in granting an injunction to restrain foreign proceedings on the clear and simple ground that the defendant has promised not to bring them.



The courts in countries … party to … the New York Convention, are accustomed to the concept that they may be under a duty to decline jurisdiction in a particular case because of the existence of an … arbitration clause. I cannot accept the proposition that any court would be offended by the grant of an injunction to restrain a party from invoking a jurisdiction which he had promised not to invoke and which it was its own duty to decline.”

181. Although The Angelic Grace concerned an arbitration agreement governed by English law, that was not material to the reasoning of the Court of Appeal. The rationale for the court’s approach was the fact of the promise made, not the law by which it was governed. That accords with principle.

182. Nor does article II(3) of the New York Convention make any difference. As noted earlier, under this article a court of a Convention state is required to refer the parties to arbitration when it is seized of a matter which the parties have agreed to arbitrate (unless the arbitration agreement is null and void, inoperative or incapable of being performed). The New York Convention is concerned with recognition and enforcement of arbitration agreements and awards, not jurisdiction - see, for example, Shashoua v Sharma [2009] EWHC 957 (Comm); [2009] 2 All ER (Comm) 477, paras 36-38. If a court is seized of jurisdiction under its own law or rules, article II(3) obliges it to exercise that jurisdiction to enforce arbitration

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agreements. It does not purport to nor does it confer any primacy over the jurisdiction of the courts of the seat.

183. The grant of an anti-suit injunction is always a matter of discretion. There may be circumstances in which it would be appropriate to await a decision of a foreign court. If, for example, the scope of the arbitration agreement was about to be determined by the highest court in the country of the governing law in unrelated proceedings, then it might be sensible for the English court to await that decision. Where, however, the issue arises in proceedings brought in alleged breach of the arbitration agreement, deference to the foreign court should generally give way to the importance of upholding the parties’ bargain and restraining a party to an arbitration agreement from doing something it has promised not to do.

184. We therefore agree with the Court of Appeal that the principles governing the grant of an anti-suit injunction in support of an arbitration agreement with an English seat do not differ according to whether the arbitration agreement is governed by English law or foreign law. Forum conveniens considerations are irrelevant and comity has little if any role to play. The court’s concern will be to uphold the parties’ bargain, absent strong reason to the contrary, and the court’s readiness to do so is itself an important reason for choosing an English seat of arbitration.

185. It follows that if the agreement to arbitrate disputes contained in article 50.1 of the construction contract had been governed by Russian law, it would have been necessary for the English court to determine whether under the law of Russia the agreement is valid and the claim which Chubb Russia is seeking to pursue in Russia falls within its scope. If those questions were answered in the affirmative, it would in any event have been appropriate to grant an anti-suit injunction.

XII Overall conclusion

186. Although our approach to the determination of the law applicable to the arbitration agreement differs from that taken by the Court of Appeal, we have similarly concluded that the arbitration agreement in this case is governed by English law. It is common ground that in these circumstances the arbitration agreement is valid, the dispute between the parties falls within it and that the injunction granted by the Court of Appeal to restrain Chubb Russia from proceeding against Enka in Russia was properly granted. It follows that we would dismiss the appeal.

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LORD BURROWS: (dissenting) (with whom Lord Sales agrees)

1. Introduction

187. In this case, we are presented with an intriguing question of law which courts and commentators have been grappling with for many years. What is the proper law (in the English common law conflicts of law) of an arbitration agreement where there is no express choice of law clause in the arbitration agreement? In particular, should the proper law of the arbitration agreement be the law of the main contract in which the arbitration agreement is contained or should it be the law of the seat of arbitration? In shorthand, should one determine the proper law of the arbitration agreement by the “main contract” approach or the “seat” approach? In this case, the seat of the arbitration is England but the proper law of the main construction contract, in which the arbitration agreement is contained, is Russian law (although there is a dispute as to the precise reason for that). Although the ultimate question for this court is whether to issue an anti-suit injunction to stop proceedings in Russia it is first helpful, and arguably essential, to determine the proper law of the arbitration agreement. That proper law issue is of wide public importance and this (dissenting) judgment is almost entirely devoted to it.

188. A bare outline of the facts will here be sufficient. The claimant and respondent to this appeal (“Enka”) is a Turkish engineering company that had been engaged as a subcontractor in construction work at a power plant in Russia. The head-contractor (CJSC “Energoproekt”) assigned its rights against Enka to the owner and developer (PJSC “Unipro”). There was an arbitration agreement (in article 50.1) in the construction contract (“the main contract”) between Enka and the head-contractor that disputes would be determined by way of International Chamber of Commerce (“ICC”) arbitration with London seat. Following a massive fire at the power plant, the Russian first defendant insurer and the appellant in this appeal, OOO “Insurance Company Chubb” (which I shall refer to throughout as “Chubb Russia”), paid an insurance claim made by the owner and was subrogated to any rights the owner had against Enka. Chubb Russia brought a claim against Enka (and others) in Russia. Enka contended that those proceedings were in breach of the arbitration agreement and applied to the Russian court to dismiss Chubb Russia’s claim. It also brought a claim in England for an anti-suit injunction against the defendants, all members of the Chubb group of companies.

189. At first instance, Andrew Baker J declined to reach a decision on the proper law of the arbitration agreement but dismissed Enka’s claim for an anti-suit injunction on the ground of forum non conveniens: [2019] EWHC 3568 (Comm). Subsequently Enka’s claim in Russia to dismiss the Russian proceedings, as being in breach of the arbitration agreement, failed although Chubb Russia’s claim on the merits against Enka also failed. Both Enka and Chubb Russia are appealing that

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decision to the Russian appeal court (and the appeal is set for late October 2020). Meanwhile the Court of Appeal here (Flaux, Males and Popplewell LJJ) ([2020] EWCA Civ 574) allowed Enka’s appeal against Andrew Baker J’s decision. It held that the proper law of the arbitration agreement was English and granted Enka an anti-suit injunction to stop any Russian appeal going ahead as being in breach of the arbitration agreement.

190. Chubb Russia applied to the Supreme Court for permission to appeal from the decision of the Court of Appeal. This court granted permission to appeal and also stayed the anti-suit injunction upon Chubb Russia giving suitable undertakings to protect Enka’s position pending the outcome of this expedited appeal.

191. It will be helpful to set out immediately the arbitration agreement. This appears within article 50.1 of the main construction contract in the following terms:

Resolution of disputes

50.1. The Parties undertake to make in good faith every reasonable effort to resolve any dispute or disagreement arising from or in connection with this Agreement (including disputes regarding validity of this agreement and the fact of its conclusion (hereinafter - ‘Dispute’) by means of negotiations between themselves. In the event of the failure to resolve any Dispute pursuant to this article within 10 (ten) days from the date that either Party sends a Notification to the opposite Party containing an indication of the given Dispute (the given period may be extended by mutual consent of the Parties) any Party may, by giving written notice, cause the matter to be referred to a meeting between the senior managements of the Contractor and Customer (in the case of the Contractor senior management shall be understood as a member of the executive board or above, in the case of Customer, senior management shall be understood as general directors of their respective companies). The parties may invite the End Customer to such Senior Management Meeting. Such meeting shall be held within fourteen (14) calendar days following the giving of a notice. If the matter is not resolved within twenty (20) calendar days after the date of the notice referring the matter to appropriate higher management or such later date as may be unanimously agreed upon, the Dispute shall be referred to international arbitration as follows:

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Referring Principles
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