(1) Amazon.com, Inc.& ors (Applicants/Defendants) v Stephan (Respondent/Claimant) (2) Amazon.com, Inc & ors v Hammond (Applicants/Defendants) v Hammond (Respondent/Claimant)
Thursday 5 February 2026
(1) By Appellant’s Notice submitted on 30 October 2025 the Applicants apply for permission appeal the decision of the Competition Appeal Tribunal (“the Tribunal”) dated 24 July 2025 to certify the collective proceedings brought by the Respondent as class representative on an opt-out basis.
(2) By Appellant’s Notice submitted on 4 November 2025 the Applicants apply for permission appeal the decision of the Competition Appeal Tribunal (“the Tribunal”) dated 24 July 2025 to certify the collective proceedings brought by the Respondent as class representative on an opt-out basis.
The Tribunal’s judgment dated 24 July 2025 concerns two collective proceedings applications against Amazon, brought by Respondent 1 on behalf of UK-based third-party seller and Respondent 2 on behalf of UK consumers. They allege that Amazon abused its dominant position through practices such as self-preferencing in the Buy Box, favouring its own fulfilment service (FBA), and restricting access to Prime.
The Tribunal granted both applications as opt-out collective proceedings. It found the claims suitable for certification. The Tribunal rejected Amazon’s arguments about internal class conflicts and ruled that opt-out proceedings were appropriate given the size and nature of the classes.