KWOK HO WAN v UBS AG (LONDON BRANCH)

Under the Lugano Convention, the domicile rule is the starting point and the special jurisdictions in Article 5 must be interpreted strictly. For Article 5(3), economic loss is located by asking where and when the damage actually manifested, ordinarily focusing on the crystallisation of the loss rather than the transaction which created the risk or the place where the claimant ultimately felt its consequences. Foreseeability and the sound administration of justice may provide a cross-check, but not an independent jurisdictional basis. Under Article 5(5), the claim must have a sufficient nexus with the operations of the branch. The branch need not have committed every element of the tort or stood in for the parent. The question is fact-sensitive and requires consideration of the branch’s actual participation in the relevant events.

The claimants alleged that UBS personnel negligently misrepresented the terms and operation of financing used for an investment in Haitong shares. The investment was structured through Dawn State, with UBS London providing financing and holding the secured shares in a London account. After the share price fell, UBS London enforced its security and the investment was substantially lost.

UBS London challenged the jurisdiction of the English court over the claims brought by Mr Kwok and Ace Decade, relying on the general domicile rule in Article 2 of the Lugano Convention. The claimants relied on the special jurisdictions in Article 5(3), concerning the place where the harmful event occurred, and Article 5(5), concerning disputes arising out of branch operations. The central questions were where the alleged economic damage manifested and whether the claims had a sufficient nexus with UBS London’s operations.

1. Jurisdictional standard. The claimant had to establish a good arguable case. The court should attempt to decide which party had the better case. If that could not be done fairly at the jurisdiction stage, a plausible evidential basis was sufficient.
2. Article 5(3). The relevant damage was not suffered merely when the claimants relied on the representations, transferred funds, or later felt the economic consequences. The modern CJEU authorities required attention to where the damage actually manifested. In a contingent investment-loss case, manifestation was most naturally associated with the point at which the loss crystallised and became certain and irreversible.
3. The loss manifested in London when UBS London sold the secured shares and the value of the investment was irretrievably lost. The location of the secured account, the contractual arrangements governed by English law, and the foreseeability and evidential advantages of London supported that conclusion as a cross-check. The fact that the claimants’ economic position was affected elsewhere did not displace it.
4. Article 5(5). The provision required a branch and a sufficient nexus between the dispute and the branch’s operations. The court rejected a requirement that the branch must have stood in for the parent or participated in every act constituting the tort. The inquiry was fact-sensitive. UBS London was central to the transaction, its policies were the subject of the alleged representations, it was the contractual financing counterparty, and its enforcement of the security caused the actionable loss. Those matters established the requisite nexus.
5. UBS London’s application was dismissed. The court declared that it had jurisdiction over the claims.