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James Aitken


James Aitken is a partner with the antitrust team in London.



Antitrust, competition and trade


Much of James’ work involves dealing with fast-moving investigations, many of which involve behavioural issues with significant implications for the clients’ commercial conduct and strategic objectives.

His experience in working in the UK Competition Appeal Tribunal is invaluable as it enables him to approach cases with practical insight gained from first-hand experience of seeing complex evidence and arguments tested. His clients value his calm professionalism and practical approach in handling what can sometimes be stressful situations.

He also handles obtaining regulatory clearances for mergers, both before the EU Commission and UK CMA as well as coordinating obtaining necessary clearances worldwide. He is also one of the partners with particular experience of advising regulated utilities and on litigation challenges to regulatory decisions in court and the UK CAT. Sectors he specialises in include telecoms, media and technology; energy and natural resources; financial institutions, and infrastructure and transport. He has become particularly well-known for his strategic advice to leading players on the intersection of antitrust law with patent law and digital business models. 

Many of the cases James deals with involve working across more than one jurisdiction. In addition to handling the EU Commission or CMA aspects of a matter James often finds himself managing a team of lawyers across continents. As a result, his ability to manage collaboratively but purposefully is the key to success.

James is ranked as a leading individual in the 'Competition/European Law' section of Chambers UK and in Who's Who Legal.

As well as regularly speaking at seminars, James has co-authored a chapter in the seventh edition of the leading publication Bellamy & Child’s European Community Law of Competition.

Career to date

James joined us in 2000. Between 2004 and 2006 he was a référendaire (legal assistant) to the President of the UK Competition Appeal Tribunal.

Qualifications and education

Solicitor, England and Wales
Solicitor, Ireland
Solicitor, Scotland


English, French, Norwegian

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