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England - London Bar
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Competition

Matthew O’Regan

Matthew O’Regan

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Matrix Chambers

Matrix Chambers is prominent in the field of competition law, integrating established strengths in related practice areas to lead on major collective action proceedings, CAT appeals, and complex regulatory matters. The ‘exceptionally smart and thorough’ Rhodri Thompson KC leads on prominent collective proceedings and has acted on six proceedings on behalf of the class representative in damages claims against water companies based on claims of abuse of dominance. Prominent competition law juniors include Christopher Brown, who represented Lloyds Banking Group against the Federal Deposit Insurance Corporation in a competition damages claim concerning collusion between banks over LIBOR, and Nicholas Gibson, whose broad practice has recently included appearing unled for the Competition and Markets Authority in interventions into major collective actions proceedings. The strength in depth of the chambers’ competition practice at the junior level was greatly increased in the last year by the arrivals of the ’clear, forceful and convincing’ Suzanne Rab, who recently acted against Mastercard and Visa in collective proceedings in the CAT, and the ‘very helpful and very commercial’ Matthew O’Regan, who has a particular specialty in competition law elements of merger control cases.
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Matthew’s practice focuses on competition law and regulation and subsidy control. He has a broad practice, covering all aspects of competition law, including disputes and litigation, investigations by the Competition and Markets Authority and other regulators and wide range of advisory matters. He acts for a wide range of clients in both the public and private sectors, including major UK companies and multinational businesses, as well as small and medium-sized enterprises, government departments and local authorities.

He appears, led and unled, regularly before the Competition Appeal Tribunal and has also appeared before the High Court and the County Court, and has also advised in arbitration proceedings. As a solicitor, he appeared in several competition and state aid cases before the EU General Court and the Court of Justice, in Luxembourg.

Prior to joining Matrix in May 2024, he practised from a leading set of Chambers in Bristol.  Before being called to the Bar in 2015, Matthew practised as a solicitor with leading firms in London, Brussels (where he worked for over a decade in a leading international law firm) and Bristol (where he was a partner in a leading national firm).

Matthew is a member of the Bar of England and Wales. He is an editor of Chitty on Contracts and of the Competition Law Journal.

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