We use some essential cookies to make this website work.
We’d like to set additional cookies to understand how you use GOV.UK, remember your settings and improve government services.
We also use cookies set by other sites to help us deliver content from their services.
You have accepted additional cookies. You can change your cookie settings at any time.
You have rejected additional cookies. You can change your cookie settings at any time.
Departments, agencies and public bodies
News stories, speeches, letters and notices
Detailed guidance, regulations and rules
Reports, analysis and official statistics
Consultations and strategy
Data, Freedom of Information releases and corporate reports
Guidance on how the Competition and Markets Authority (CMA) operates the mergers control regime under the Enterprise Act 2002.
1. Preface The Competition and Markets Authority’s (CMA’s) merger control…
Guidance for businesses on the Competition and Markets Authority’s (CMA) approach to assessing mergers.
Introduction This publication explains the substantive approach of the…
Guidance on how the Competition and Markets Authority (CMA) uses interim measures and derogations in merger investigations.
During an investigation, the CMA may require merging businesses to: pause…
Guidance on merger remedies in Phase 1 and Phase 2 investigations.
How to notify the Competition and Markets Authority (CMA) about a merger involving your business.
Information for businesses about how the Competition and Markets Authority (CMA) investigates mergers, including processes, timelines and possible outcomes.
What to do if you're thinking about a merger, or already going through a merger investigation.
Quick guide, intended primarily for business, providing a simple overview of the UK merger regime and the CMA’s approach when reviewing mergers.
Guidance for lawyers and third parties on how the CMA collects information before deciding whether to investigate a merger.
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.
How the CMA applies exceptions to the duty to refer in operating the merger control regime.
Guidance on requests for internal documents in merger investigations.
This guidance concerns the CMA's activities in monitoring and enforcing compliance with final merger and market undertakings and orders.
Template used by the CMA when starting an investigation into a merger that has not been formally notified to the CMA by the merging parties.
Templates for confidentiality ring and disclosure room undertakings and disclosure room rules used in CMA investigations.
Explains the CMA’s approach to the variation and termination of merger, monopoly and market final undertakings and orders.
How the Competition and Markets Authority (CMA) will engage with businesses and their advisors during a merger investigation.
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.
Guidance on disclosure of information in merger inquiries, market investigations and reviews of undertakings and orders.
Fees to pay for mergers that are investigated by the Competition and Markets Authority (CMA), and how to pay them.
Don’t include personal or financial information like your National Insurance number or credit card details.
To help us improve GOV.UK, we’d like to know more about your visit today. Please fill in this survey (opens in a new tab and requires JavaScript).