CMA
In October 2025, HM Treasury published an update to its regulatory action plan, setting out the Government's strategic steer to the CMA on supporting economic growth. In March 2026, the CMA published its Annual Plan 2026–2027, with priorities including the 4Ps framework, targeting anti-competitive conduct in key markets and supporting SMEs. In January 2026, the Government consulted on competition reform, including replacing the Phase II independent expert panel with CMA board sub-committees. The King's Speech on 13 May 2026 confirmed the Government's intention to introduce a Competition Reform Bill.
Businesses should monitor the Bill’s progress through the 2026–27 parliamentary session and assess how proposed changes to Phase II decision-making may affect their deal planning.
Merger control
In October 2025, the CMA published draft revised merger remedies guidance, taking a more flexible approach to behavioural remedies and incorporating the 4Ps framework; final guidance followed on 19 December 2025. In January 2026, the CMA launched a review of merger efficiency arguments, followed by a consultation on draft revised merger efficiencies guidance on 3 June 2026. Key changes include rivalry-enhancing efficiencies assessed as part of the overall competitive impact rather than after a finding of harm, greater recognition of dynamic efficiencies, and a broader evidence base. The consultation closed on 1 July 2026, with final guidance expected later in 2026.
Once finalised, the guidance will replace paragraphs 8.2 to 8.27 of the Merger Assessment Guidelines; merging parties should engage with the revised framework, particularly in relation to dynamic efficiencies.
Labour markets
Anticompetitive behaviour in labour markets is a growing global focus. In September 2025, the CMA published guidance confirming that no-poaching and wage-fixing agreements constitute anticompetitive conduct, along with examples of sensitive information exchanges and practical compliance steps. In March 2025, the CMA issued its first labour markets infringement decision, fining the BBC, ITV, BT and IMG over £4.2 million for sharing sensitive pay information about freelance workers. This reflects a broader international shift — the European Commission imposed €329 million in fines on Delivery Hero and Glovo for no-poach infringements in June 2025.
The CMA has signalled it will publish further guidance for employers; businesses — particularly in retail, hospitality and logistics — should review their pay-setting and recruitment arrangements to ensure compliance.