Callum Walters is an associate who works on complex cross-border litigation involving multinational corporations, with a particular focus on large-scale group actions. He has experience in high-profile, multi-party proceedings, including working on the NOx Emissions Group Litigation, one of the largest consumer group claims brought before the English courts. Callum also worked on the legal team acting in Município de Mariana v. BHP Group UK Ltd and BHP Group Ltd, in which hundreds of thousands of Brazilian claimants claim for damages arising from the 2015 Fundão dam disaster in Brazil.

Publications

Class Actions Law Guide

Co-author of the England & Wales - Market Insights chapter in the Class Actions Law Guide , published 5 May 2026 , alongside Guy Robson .