Evans v Barclays Bank Plc & Ors [2025] UKSC 48 (18 December 2025)

Executive summary

The judgment concerns collective proceedings under section 47B of the Competition Act 1998 and the choice between opt-in and opt-out procedure. The Supreme Court addresses the Tribunal’s gatekeeping discretion, including how the strength of the claim and practicability of opt-in proceedings should be weighed, in the context of FX cartel follow-on damages claims based on European Commission settlement decisions.

Key points

• Parties: Evans sought to bring collective proceedings against Barclays Bank Plc and others following Commission findings of FX spot-trading infringements.
• Holding/theme: the appeal concerns whether the Competition Appeal Tribunal was entitled to refuse opt-out collective proceedings and how much weight it could give to the pleaded strength of the claim.
• Reasoning focus: the Tribunal treated the claim as very weak and thought opt-in proceedings were practicable; the Court of Appeal disagreed and remitted the case.
• Legal context: the case turns on rule 79(3) of the Competition Appeal Tribunal Rules 2015 and the Tribunal’s broad discretion in collective proceedings.
• Competition-law angle: the underlying infringements were article 101 TFEU and article 53 EEA settlement decisions involving chatroom exchanges among bank traders in FX markets.
• Sanctions/export-control angle: the source text does not concern sanctions or export controls; its relevance is indirect, through market-conduct, enforcement, and large-scale financial liability risk.

Why it matters

For sanctions and geopolitical-risk audiences, the case is a reminder that cartel-type conduct in globally traded financial markets can generate collective damages exposure well after the underlying infringement decisions. It also shows how procedural rulings on opt-in versus opt-out can materially affect enforcement leverage and sovereign/market risk for major financial institutions.

Implications

The decision is important for litigation strategy because the Tribunal’s discretion over collective procedure can determine whether a claim scales into a mass-liability exposure or remains a narrower opt-in action. For compliance and enforcement teams, the case reinforces the need to manage antitrust exposure in cross-border trading desks, since settled competition findings can become the platform for follow-on private claims with substantial aggregate damages risk.