The Kingdom of Spain and another v The London Steam-Ship Owners' Mutual Insurance Association Limited No 2

Factual and Procedural Background

The Appellant, a mutual protection and indemnity insurer, insured the owners and managers of Vessel A, which sank in November 2002 carrying 70,000 tonnes of oil and caused widespread coastal pollution affecting State A and State B. The insurance incorporated a “pay to be paid” condition and an arbitration clause requiring arbitration in the designated forum under English law. [1][2][3][4]

The Respondents, State A and State B, pursued statutory direct claims against the Appellant in State A’s courts. An execution order dated 1 March 2019 quantified their entitlements at approximately €2.355 billion and €117 million respectively, subject to the insurance limit of US$1 billion. Under English conflict-of-laws rules, their direct rights were characterized as contractual and governed by English law. [5][6][7][8][9]

Initial arbitral awards declared that the Respondents were bound by the arbitration clause and that the Appellant had no liability because the insured owners had not discharged their liabilities. The Respondents’ jurisdictional and immunity challenges failed, and permission to enforce those awards was granted and upheld on appeal. [10][11][12][13][14][15]

The Respondents nevertheless continued the foreign proceedings. Further arbitrations awarded monetary relief for defence costs and losses arising from enforcement of the foreign judgment, proceeding on the assumption that the obligation to arbitrate was equitable. One tribunal also granted an injunction. [16][17][18][19][20][21][22][23][24][25][26][27][28]

The High Court held that neither injunctions against the Respondents nor damages in lieu were available, but upheld equitable compensation. The Court of Appeal subsequently set aside the monetary relief on the basis that equitable compensation was unavailable. The Appellant appealed to the Supreme Court; the injunction and damages-in-lieu rulings were not challenged. [29][30][31][32][33][34][35][36]

Legal Issues Presented

1. Whether an obligation to arbitrate arising through the conditional benefit principle is contractual or equitable, and consequently whether its breach attracts common law damages or equitable compensation. [37][38][39][40]
2. Whether the Court of Appeal exceeded the statutory limits of an appeal on a question of law under section 69 of the Arbitration Act 1996. [41][42]
3. Whether the corrected characterization required the monetary awards to be varied, set aside or remitted, including whether conditional compensation could cover future losses resulting from completed breaches. [43][44][45][46][47][48]

Arguments of the Parties

Appellant’s Arguments

• The Court of Appeal wrongly denied monetary relief and exceeded the limits of section 69 appeals. [36][49][41]
• Future enforcement losses could be compensated either as consequences of completed breaches or, alternatively, through anticipatory relief against future breaches. [50]
• Following the Supreme Court’s proposed contractual analysis, the awards should be confirmed without remission: the contractual basis for compensation was at least as strong as the equitable basis originally advanced. [51]
• The Appellant also relied on authorities concerning anticipatory protection of contractual indemnities, and complained about appellate comments concerning the parties’ relative culpability. [52][53]

Respondents’ Arguments

• The Respondents challenged the tribunals’ powers to grant injunctions and equitable compensation. [54][55][56][57]
• State A argued in arbitration that the Appellant caused its own loss, or failed to mitigate it, by not defending liability proceedings, seeking a stay or invoking the “pay to be paid” condition. [58][59]
• State B raised concerns that compensation would neutralize the foreign judgment; the Respondents also maintained that the Court of Appeal could consider international comity when assessing the power to award compensation. [60][61][62]
• In supplemental submissions, the Respondents argued that issue estoppel barred contractual damages, that the Appellant had declined to advance such a claim, and alternatively that the awards should be remitted so entitlement and quantum could be argued. [63]
• The Respondents submitted that the Court of Appeal’s causation observations were not part of its core reasoning and that its comments about culpability were merely background. [64][53]

Table of Precedents Cited

Court's Reasoning and Analysis

1. The obligation retained its contractual character

The Court distinguished a condition precedent from the benefit-and-burden principle. The “pay to be paid” clause simply prevented recovery before payment; it imposed no corresponding duty. By contrast, asserting a contractual right could subject a third party to the related obligation governing its enforcement. [165][166][88][146]

The principle does not undermine the rationale of privity because the third party chooses whether to claim the contractual benefit. Once it does so, it assumes the same relevant burden as the original contracting party, not a different or lesser obligation. Whether that burden is legal or equitable depends on the obligation itself. [167][168][92][93]

Accordingly, the Respondents were treated as parties to the arbitration agreement for their claims. Their breaches were contractual, or legally equivalent to contractual breaches, attracting ordinary common law remedies. Treating the obligations as equitable could unjustifiably give third parties access to discretionary equitable defences unavailable to original contracting parties. [169][170][171][172]

Equitable compensation compensates equitable wrongs, not breaches of contract. The Court therefore rejected the shared premise on which the arbitrations and earlier proceedings had proceeded. Misleading equitable terminology in earlier authorities did not alter the contractual substance of the rights involved. [173][87][174][114][115][116][175][176]

2. Neither privity nor state immunity excluded damages

The principle operates “defensively” only in the sense that no arbitration obligation arises unless the third party claims the contractual benefit. Once that obligation arises, there is no principled reason to limit remedies to declarations or injunctions. Earlier benefit-and-burden cases also supported positive monetary obligations. [177][178][179][180][101][102][106]

The statutory prohibition on injunctions against states addressed the immediate coercion associated with injunctive relief. It did not preclude common law damages. Similarly, the unavailability of damages in lieu under section 50 did not remove an independent common law power to compensate completed breaches. [137][138][139][181][141][182]

3. The appellate causation and comity grounds were unsustainable

The foreign courts’ decisions were a cause of loss, but did not displace the Respondents’ pursuit of proceedings in the wrong forum as an effective cause. The arbitrator had found the Appellant’s conduct reasonable and identified the risk of an adverse foreign decision as one the arbitration clause was intended to avoid. [183][59][146]

More fundamentally, the Court of Appeal’s causation theory fell outside the questions submitted to arbitration and permitted on appeal. Section 69 does not authorize a general reconsideration of an award or departure from its factual findings. [42][149][150][151][152][153][154][64]

The compensation awards did not prevent foreign courts from recognizing or enforcing the judgment: they required compensation for loss caused by obtaining it in breach of the arbitration obligation. The third-country comity objection was also outside the permitted appeals, and comity could not determine whether the remedial power existed. [157][184][61][62]

The Court nevertheless accepted that the appellate comments about relative culpability were background, not new factual findings or part of the legal reasoning. [53]

4. Reclassification did not require remission

After inviting supplemental submissions, the Court found no procedural unfairness in correcting the shared legal assumption. Issue estoppel did not arise because the earlier proceedings had not determined whether the obligation was contractual or equitable, or whether its breach supported monetary compensation. The Appellant’s incorrect remedial label did not justify denying substantively available relief. [44][45][158][159][74][75][185]

Common law damages could not compensate breaches that had not yet occurred. The authorities concerning anticipatory indemnity protection involved injunctions and therefore did not establish the necessary monetary jurisdiction here. [48][52]

However, future losses resulting from completed breaches were different. Conditional orders could require damages to be paid when those losses arose. The awards already operated in that way, and the Respondents identified no further argument that could have altered the result under the correct contractual analysis. Remission was therefore unnecessary. [160][161][162][186][164][187][188]

Holding and Implications

The appeal was allowed, and the arbitral awards were to be confirmed subject to variations. The Court approved adding a recital identifying breach of a contractual obligation as the basis of the monetary relief and directed removal of the inaccurate word “equitable” from the relevant declarations concerning State B. [85][86]

The Appellant retained compensation for past losses and conditional relief for future losses caused by completed breaches, without further arbitration. The judgment establishes that conditional-benefit arbitration obligations are contractual and attract common law damages, not equitable compensation; immunity from injunctions does not itself exclude those damages. [175][139][189][162][164][187][188][85][86]