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London Litigation Insights

Disputes 180 Episode 11: Collective Proceedings in the Competition Appeal Tribunal

May 05, 2026

By Stuart Alford KC

 

This episode explores a significant U.K. Supreme Court decision that clarifies how the Competition Appeal Tribunal should strike the balance between opt‑in and opt‑out collective proceedings. We outline the key factors the Court emphasised — including claim strength, the practicality of opt‑in actions, the Tribunal’s neutral starting point and limits on relying on third‑party findings. The episode highlights what this means for the future of U.K. class actions, with a more cautious and structured approach to opt‑out claims.

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Image: Stuart Alford KC
Stuart Alford KC

Partner, Litigation Department