On 11 December 2020, the UK Supreme Court rendered its long-awaited judgment on Merricks v. Mastercard, rejecting Mastercard’s appeal against the judgment of the Court of Appeal of England and Wales of April 2019. UK Supreme Court 11 December 2020,  UKSC 51 The appeal related to the procedure for collective proceedings concerning claims for damages in competition cases. It was the first collective proceedings case of this sort to reach the Supreme Court, and addressed important questions about the correct legal requirements for certification of a claim. The main elements of the Court of Appeal’s decision were:
The Supreme Court referred the case back to the CAT.