Martin Rees is a partner in the Antitrust and Competition and Regulatory Group based in London.  He specialises in contentious competition law, including the defence of clients in investigations by the European Commission and UK Competition and Markets Authority, applications and references to the European Courts in Luxembourg, appeals to and judicial review before the UK Competition Appeals Tribunal and claimant and defendant litigation for damages and injunctive relief before the High Court in London and related appeals.

His practice covers cartels, abuse of dominant position, investigations by sector regulators, merger and market investigations, state aid and procurement, and industry sectors such as transport, sport, retail, energy, industrial products healthcare and food and drink.