Jurisdiction(s):
United Kingdom
Key definition
Antitrust definition

What does Antitrust mean? In legal practice, antitrust refers to the body of competition rules that prohibit anti-competitive agreements, concerted practices and abusive unilateral conduct. The term is descriptive (widely used alongside competition law) and, in UK/EU usage, usually covers restrictive agreements and abuse of dominance, distinct from merger control and state aid. In the UK (England and Wales, Scotland and Northern Ireland), the Chapter I and Chapter II prohibitions in the Competition Act 1998 broadly mirror Article 101 and Article 102 TFEU. They are enforced by the Competition and Markets Authority and concurrent sectoral regulators, with sanctions including fines up to 10%...

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UK competition law compliance: code, prohibited agreements and abuse of dominance, competitor interactions, and CMA dawn raid guidance

Precedents
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We are strong but fair competitors

We pursue competition with energy while upholding integrity and complying with all relevant competition laws. These laws exist to protect businesses and consumers from anti-competitive behaviour, and to preserve effective competition. Competition laws forbid 'restraints of trade', covering certain kinds of agreements or conduct involving rivals, customers or suppliers, and can also apply to a single undertaking with a dominant market position...

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Web page updated on 22/05/2026

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