You Can't Have the Benefit Without the Burden: The UK Supreme Court on Third Parties and Arbitration Agreements

Can you take the benefit of a contract and leave its arbitration clause behind?

The UK Supreme Court has delivered an important answer in The Kingdom of Spain v The London Steam-Ship Owners’ Mutual Insurance Association Ltd [2026] UKSC 36, handed down on 28 October.

The dispute arose from the Prestige disaster. Spain and France had pursued direct claims against a P&I Club before the Spanish courts, relying on rights derived from an insurance contract governed by English law and containing a London arbitration clause.

The States were not original parties to that contract. Yet, by seeking to enforce rights under it, they became bound by its arbitration clause under the conditional benefit principle.

The Supreme Court has now clarified an important consequence of that principle: the obligation to arbitrate is contractual in nature. A third party who invokes contractual rights assumes the corresponding contractual burden, and a breach of that obligation attracts the ordinary remedies for breach of contract, including common law damages.

The practical significance is considerable. Although State immunity prevented the grant of an injunction against Spain and France, it did not preclude an award of damages for losses resulting from their breach of the obligation to arbitrate.

The Court also rejected the suggestion that compensation payable following enforcement of the Spanish judgment in another jurisdiction necessarily infringed international comity. The awards did not prevent foreign courts from deciding whether to recognise or enforce that judgment.

There is a further point worth noting: the Court of Appeal had gone beyond the permissible scope of the appeals under section 69 of the Arbitration Act 1996.

The message for arbitration practitioners is clear: the decision gives real substance to the benefit-and-burden principle and confirms that the obligation to arbitrate cannot be treated as an obligation without meaningful contractual consequences.

A significant judgment on the reach of arbitration agreements, third-party rights and the remedies available when an agreed arbitral forum is disregarded.