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Policy Paper Published 9 Jun 2026 Competition and Markets Authority ↗ View on GOV.UK

Merger investigation outcomes

Outcomes of merger investigations carried out by the CMA under the Enterprise Act 2002.

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The Competition and Markets Authority (CMA) investigates certain potential mergers and assesses how they could impact competition in the UK.

We can only investigate a merger if it meets certain legal criteria. If it does, we can take evidence-based, proportionate action to protect competition, deliver growth and promote better outcomes for UK consumers.

This page includes:

  • an overview of how many mergers we investigated, and their outcomes, in the full calendar years from 2023 to 2025

  • the outcomes of all merger investigations completed in each financial year, from 1 April 2004 to the latest full month

Visit the CMA case finder for a list of CMA investigations.

More information about overall UK merger activity is available from the Office for National Statistics’s quarterly statistical bulletin on mergers and acquisitions involving UK companies.