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How to report a potential breach of competition or consumer law to the Competition and Markets Authority (CMA), and what to expect from us.
Guidance on the principles and process of applying for leniency and no-action in cartel cases.
What to do if you're thinking about a merger, or already going through a merger investigation.
What the Competition and Markets Authority (CMA) has done, and will do, to promote innovation, investment and growth in UK mobile platforms.
Guidance on how the CMA applies the Chapter I prohibition in the Competition Act 1998 to horizontal agreements, and on the application of the Specialisation Agreements Block Exemption and the Research and Development Block E…
The orders provide measures on benefits, incentive schemes and better information for patients.
The topics in the Market Guidance are based on analysis of the notifications received under the NSI Act and feedback from stakeholders on their experience of the system.
Information to help businesses understand how competition law applies to environmental sustainability agreements.
Guidance on how to make a whistleblower report to the Competition and Markets Authority.
Information for businesses about how the Competition and Markets Authority (CMA) investigates mergers, including processes, timelines and possible outcomes.
Sets out the basis on which the CMA calculates financial penalties for CA98 infringements.
Explains the main things businesses need to know to stay on the right side of competition law and to spot and report illegal activity.
Outlines the CMA’s approach to imposing administrative penalties for failure to comply with requirements imposed under its investigatory and remedies powers.
How the Competition and Markets Authority (CMA) will embed the 4Ps (pace, predictability, proportionality and process) to support growth, investment and business confidence in the UK’s digital markets competition regime.
The section 3 statement sets out how the Secretary of State expects to exercise powers under the NSI Act to call-in certain acquisitions for scrutiny.
A guide to staying on the right side of competition law when recruiting workers, and setting pay and other working conditions.
This treaty was presented to Parliament in April 2026.
How the CMA applies exceptions to the duty to refer in operating the merger control regime.
Complying with competition law while working with other businesses.
Templates for confidentiality ring and disclosure room undertakings and disclosure room rules used in CMA investigations.
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