Big CAT Watch: our UK competition collective proceedings tracker (May 2026)

Big CAT Watch has now been updated as of 5 May 2026.

Big CAT Watch is our data and analysis platform covering UK competition collective proceedings in the Competition Appeal Tribunal (CAT). It includes charts showing:

• Certification outcomes
• Whether applications are opt-in or opt-out, standalone or follow-on and the types of competition infringements alleged
• Which industrial sectors are being targeted
• Trial outcomes and settlements 
   

Our latest edition includes updated data and analysis following recent developments, including the CAT’s decision not to certify the proceedings brought against producers of Atlantic salmon because of the Tribunal’s concerns about the likely take-up by class members.

Click here to access Big CAT Watch