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Guidance on the functions of the Competition and Markets Authority under the Withdrawal Agreement

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This guidance is designed to explain how EU Exit affects the CMA’s powers and processes for competition law enforcement (‘antitrust’, including cartels), merger control and consumer protection law enforcement during the transition period, towards the end of that period, and after it ends. The guidance also explains the treatment of ‘live’ cases, which are those cases that are being reviewed by the European Commission or the CMA during and at the end of the transition period.


In order to have guidance in place ahead of 31 January 2020, the CMA has chosen to publish this guidance in a ‘live’ document which may be subject to change, particularly in the light of further political and legal developments.


Accordingly, the CMA may amend elements of the guidance or issue further guidance in due course to clarify and explain any differences to the UK regime which will take effect at the end of the transition period, taking into account the UK’s future relationship with the EU. The CMA welcomes any views stakeholders may wish to raise in relation to the guidance which will be considered in the context of any future guidance the CMA might issue.

Policy and International

Competition and Markets Authority

Competition and Markets Authority


E14 4QZ

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