Representing Mastercard are Sonia Tolaney KC and her team from One Essex Court, alongside counsel from Freshfields Bruckhaus Deringer LLP. Walter Merricks is represented by Marie Demetriou KC, Crawford Jamieson, and their legal team, instructed by Willkie Farr & Gallagher (UK) LLP.
Mastercard’s appeal in the £10 billion class action represents a pivotal legal battle over the determination of jurisdiction and applicable law, potentially setting a significant precedent for how international class actions are governed.
