UK/EU Agreement regarding Cooperation on the Application of their Respective Competition Laws
Summary
The UK and EU have concluded an international treaty on competition law cooperation, presented to Parliament on 15 April 2026. The agreement establishes a framework for cooperation between UK and EU competition authorities in enforcing their respective competition laws, including coordination on investigations, information sharing, and avoidance of conflicts. The treaty is referenced as MS No.4/2026 and is available as a 2.3 MB PDF document.
What changed
The UK and EU have entered into a bilateral agreement regarding cooperation on the application of their respective competition laws. This international treaty establishes formal mechanisms for coordination between UK and EU competition enforcement authorities, including provisions for notification of enforcement activities, information sharing, and procedural cooperation to avoid conflicts in cross-border competition matters.
For businesses and legal practitioners engaged in competition proceedings or transactions subject to review in both the UK and EU, this treaty signals increased coordination between authorities. Companies involved in multi-jurisdictional mergers, investigations, or enforcement actions should expect greater alignment between UK Competition and Markets Authority and European Commission proceedings. Legal professionals advising on competition compliance should monitor for subsequent implementing guidance from UK authorities.
What to do next
- Review treaty provisions for implications on cross-border competition proceedings
- Monitor for implementing guidance from UK Competition and Markets Authority
- Assess whether current compliance programmes require updates regarding UK/EU coordination
Archived snapshot
Apr 15, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
International treaty
UK/EU: Agreement regarding Cooperation on the Application of their Respective Competition Laws [MS No.4/2026]
This treaty was presented to Parliament in April 2026.
From: Foreign, Commonwealth & Development Office Published 15 April 2026 Get emails about this page
Documents
UK/EU: Agreement regarding Cooperation on the Application of their Respective Competition Laws
Ref: ISBN 978-1-5286-6402-8, CP 1566
PDF, 2.3 MB, 16 pages
Explanatory memorandum: UK/EU: Agreement regarding Cooperation on the Application of their Respective Competition Laws
ODT, 29 KB
This file is in an OpenDocument format
Details
Published title: Agreement between the United Kingdom of Great Britain and Northern Ireland and the European Union regarding Cooperation on the Application of their Respective Competition Laws.
Updates to this page
Published 15 April 2026
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