Thomas Masterman

Thomas Masterman
One Bishops Square
E1 6AD
+44 20 3088 3386


Who's Who Legal Competition: Future Leaders - Non Partners

Thomas Masterman is counsel in Allen & Overy LLP’s antitrust group. Tom joined the firm as a trainee in 2004 and was promoted to counsel in 2015. He is currently based in London, having spent periods of his career in Allen & Overy’s Brussels office. His practice covers all aspects of competition law across a variety of industries, with particular expertise in the TMT sector where he has advised on a number of the most high-profile transactions in recent years. 

Tom has secured EU, UK and international merger clearances for many clients, including Phase II and remedies cases before the EU and UK competition authorities. His experience includes advising Tullett Prebon on the CMA clearance (with remedies) of its £1.6 billion acquisition of rival ICAP; 21st Century Fox on the EC clearance of the Endemol/Shine joint venture creating the world’s largest TV production company; Tesco Mobile as an interested third person and potential remedy taker in relation to the EC’s Phase II prohibition of the Three/O2 UK merger; and Thomson Corporation on the Phase II clearance (with remedies) of its acquisition of Reuters, including the subsequent General Court appeal.  He is currently advising 21st Century Fox on the UK regulatory aspects of its proposed acquisition of Sky (after securing unconditional EC clearance of the same transaction) and on its proposed US$52 billion acquisition by The Walt Disney Company. 

On the behavioural side, Tom has advised on a number of the largest and most high-profile EC cartel cases in recent years, including the FX spot trading, auto-parts, LCD, gas insulated switchgear and heat stabilisers investigations. He was also a core member of the A&O team that won Global Competition Review Behavioural Matter of the Year in 2016 for the firm’s role on the credit defaults swap investigation.  

Tom is recognised by The Legal 500 as having “in-depth knowledge” in his field and was listed in the inaugural edition of Who's Who Legal: Competition – Future Leaders. He holds an LLB in Law with European Legal Studies from the University of Durham / Katholieke Universitat Leuven, and a postgraduate diploma in EU Competition Law from King’s College London. 

Allen & Overy's antitrust and competition practice comprises over 120 specialists located across Asia, Australia, Europe and North America. The practice advises corporate clients and financial institutions on their global antitrust policies, litigation and regulatory strategies and has acted on some of the highest-profile and most complex cases in recent years.

WWL says:Thomas Masterman "combines deep industry knowledge with a top-drawer intellect to solve client problems", say sources, particularly on high-profile mergers in the TMT space.

This biography is an extract from Who's Who Legal: Competition which can be purchased from our Shop.

Follow us on LinkedIn

Practice Areas


Browse Firms

Search Firms

The Who's Who Legal 100


News & Features

Special Reports



About Us

It is not possible to buy entry into any Who's Who Legal publication

Nominees have been selected based upon comprehensive, independent survey work with both general counsel and private practice lawyers worldwide. Only specialists who have met independent international research criteria are listed.

Copyright © 2018 Law Business Research Ltd. All rights reserved. |

87 Lancaster Road, London, W11 1QQ, UK | Tel: +44 20 7908 1180 / Fax: +44 207 229 6910 |

Law Business Research Ltd

87 Lancaster Road, London
W11 1QQ, UK