Brattle’s UK Competition Collective Actions Reports provide an annual review of developments in the UK’s collective proceedings regime before the Competition Appeal Tribunal (CAT). Prepared by Brattle’s European Competition team, the reports track the evolution of collective actions since the introduction of the opt-out regime under the Consumer Rights Act 2015.

Each edition provides a comprehensive, data-driven analysis of:

  • The number and characteristics of claims filed
  • Trends by infringement type and sector
  • Certification outcomes and procedural timelines
  • Trials, settlements, and damages awards
  • The role of law firms, funders, and regulators

This report series is intended to serve as a practical resource for practitioners, funders, policymakers, and market participants seeking to understand how the UK collective actions landscape is developing in practice.

Access the latest report below and explore prior editions in the series.

Related Practices