Mark Simpson is an antitrust and competition lawyer based in London.

Mark advises on all aspects of UK and EU competition law. He has a particular focus on contentious matters such as investigations by authorities, competition litigation before the English High Court and Competition Appeal Tribunal (CAT) and alternative dispute resolution, appeals to the EU Court, UK regulatory appeals (e.g. in relation to price control determinations for utilities) and judicial review proceedings. Mark has been involved in a number of significant cartel damages actions before the English courts, including cases relating to methionine, synthetic rubber, paraffin waxes, gas-insulated switchgear and smart chips. He has also advised clients in defending high-profile investigations by the European Commission and the UK competition authorities, including the Competition and Markets Authority and its predecessor the OFT.

Mark also has experience advising on merger control rules, the rules that apply to restrictive provisions in agreements and dominance issues, utilities regulation and trade treaty law (including FTA negotiations under the WTO framework). He has particular regulatory experience in telecommunications, electricity networks and broadcasting.

Mark advises corporates, trade associations, government agencies and regulators. His perspective is informed by periods spent outside of private practice – as an in-house adviser (at a mobile telecommunications company and at a (music) recording industry trade association) and as a government adviser in the New Zealand business ministry. 

Mark regularly speaks at conferences and comments in the media on competition issues. He is the co-author of the England and Wales chapter of the Private Competition Enforcement Review and of the UK Telecoms chapter in the GCR European, Middle Eastern and Africa Antitrust Review. 

Mark originally qualified in New Zealand as a Barrister and Solicitor before moving to the UK in 2004.