Guidance

Mergers: what they are and why we investigate them

Published 7 February 2018

Mergers involve two or more businesses joining together to form a single business. The Competition and Markets Authority is responsible for reviewing mergers in the UK to make sure they don’t have a harmful effect on competition and leave customers worse off.

Watch our short video to find out more and why you may be contacted for your views when we review a merger.

Mergers - what they are, and how we investigate them

For more detailed guidance on how the CMA handles merger reviews, see our quick guide to UK merger assessment.