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CMA Enforcement Policy and Guidance

The Competition and Markets Authority is updating its enforcement policy and guidance to clarify how it takes regulatory action against anti-competitive conduct, mergers, and consumer protection breaches. Recent updates include revised merger remedies guidance, cartel leniency policy, and enforcement function guidance.

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2026

1 event
24 Apr 2026 | Consultation (open) Competition and Markets Authority Context · primary home: Competition Reform Bill linked

Transparency and disclosure: updating our general guidance — consultation opened

The Competition and Markets Authority (CMA) is consulting on updates to its general guidance on transparency and disclosure.

▤ View document · ↗ GOV.UK · ↓ Consultation document (12pp)
+2 more
↓ Draft updated CMA6 guidance (clean version) (58pp) ↓ Draft updated CMA6 guidance (tracked changes) (54pp)

2025

10 events
30 Oct 2025 | Consultation outcome linked

Amending our Taking Regulatory Action policy — outcome published

This consultation sets out our proposals to complete the work we began in 2019 to update our policy ‘Taking Regulatory Action’.

▤ View document · ↗ GOV.UK · ↓ Amending our Taking Regulatory Action policy
+3 more
↓ DRAFT - Supporting compliance and taking regulatory action ↓ Decisions: Supporting compliance and taking regulatory acti… ↓ Analysis: Supporting compliance and taking regulatory action
28 Oct 2025 | Consultation outcome Competition and Markets Authority linked

Leniency and no-action in cartel cases — outcome published

The CMA is consulting on proposed changes to its published guidance on applications for leniency and no-action in cartel cases.

▤ View document · ↗ GOV.UK · ↓ Consultation document (25pp)
+12 more
↓ [Draft for consultation] Short guide to cartels and lenienc… (18pp) ↓ [Draft for consultation] Short guide to cartels and lenienc… (16pp) ↓ [Draft for consultation] Applications for leniency and no-a… (140pp) ↓ Summary of responses (40pp) ↓ Ashurst LLP (7pp) ↓ City of London Law Society Competition Law Committee (9pp) ↓ Cleary Gottlieb Steen & Hamilton LLP (6pp) ↓ Eversheds Sutherland International LLP (4pp) ↓ Freshfields LLP (16pp) ↓ Herbert Smith Freehills Kramer LLP (7pp) ↓ Linklaters LLP (5pp) ↓ Mills & Reeve LLP (6pp)
9 Jun 2025 | Consultation outcome Competition and Markets Authority linked

Leniency and no-action in cartel cases — consultation closed

The CMA is consulting on proposed changes to its published guidance on applications for leniency and no-action in cartel cases.

▤ View document · ↗ GOV.UK · ↓ Consultation document (25pp)
+12 more
↓ [Draft for consultation] Short guide to cartels and lenienc… (18pp) ↓ [Draft for consultation] Short guide to cartels and lenienc… (16pp) ↓ [Draft for consultation] Applications for leniency and no-a… (140pp) ↓ Summary of responses (40pp) ↓ Ashurst LLP (7pp) ↓ City of London Law Society Competition Law Committee (9pp) ↓ Cleary Gottlieb Steen & Hamilton LLP (6pp) ↓ Eversheds Sutherland International LLP (4pp) ↓ Freshfields LLP (16pp) ↓ Herbert Smith Freehills Kramer LLP (7pp) ↓ Linklaters LLP (5pp) ↓ Mills & Reeve LLP (6pp)
15 May 2025 | Consultation outcome linked

Amending our Taking Regulatory Action policy — consultation closed

This consultation sets out our proposals to complete the work we began in 2019 to update our policy ‘Taking Regulatory Action’.

▤ View document · ↗ GOV.UK · ↓ Amending our Taking Regulatory Action policy
+3 more
↓ DRAFT - Supporting compliance and taking regulatory action ↓ Decisions: Supporting compliance and taking regulatory acti… ↓ Analysis: Supporting compliance and taking regulatory action
29 Apr 2025 | Consultation outcome Competition and Markets Authority linked

Leniency and no-action in cartel cases — consultation opened

The CMA is consulting on proposed changes to its published guidance on applications for leniency and no-action in cartel cases.

▤ View document · ↗ GOV.UK · ↓ Consultation document (25pp)
+12 more
↓ [Draft for consultation] Short guide to cartels and lenienc… (18pp) ↓ [Draft for consultation] Short guide to cartels and lenienc… (16pp) ↓ [Draft for consultation] Applications for leniency and no-a… (140pp) ↓ Summary of responses (40pp) ↓ Ashurst LLP (7pp) ↓ City of London Law Society Competition Law Committee (9pp) ↓ Cleary Gottlieb Steen & Hamilton LLP (6pp) ↓ Eversheds Sutherland International LLP (4pp) ↓ Freshfields LLP (16pp) ↓ Herbert Smith Freehills Kramer LLP (7pp) ↓ Linklaters LLP (5pp) ↓ Mills & Reeve LLP (6pp)
20 Feb 2025 | Consultation outcome linked

Amending our Taking Regulatory Action policy — consultation opened

This consultation sets out our proposals to complete the work we began in 2019 to update our policy ‘Taking Regulatory Action’.

▤ View document · ↗ GOV.UK · ↓ Amending our Taking Regulatory Action policy
+3 more
↓ DRAFT - Supporting compliance and taking regulatory action ↓ Decisions: Supporting compliance and taking regulatory acti… ↓ Analysis: Supporting compliance and taking regulatory action

2024

5 events
19 Dec 2024 | Policy paper Competition and Markets Authority linked

Road fuel monitoring guidance – CMA

This document sets out guidance on the Competition and Markets Authority's (CMA) exercise of our information gathering powers when we monitor competition in connection with road fuel in the UK.

▤ View document · ↗ GOV.UK
19 Dec 2024 | Policy paper Competition and Markets Authority linked

Administrative Penalties: Statement of Policy on the CMA's Approach (CMA4) – final guidance

This guidance document is the CMA's statement of policy for these purposes and was approved by the Secretary of State for Business and Trade on 17 December 2024.

▤ View document · ↗ GOV.UK · ↓ Administrative Penalties: Statement of Policy o… (60pp)
+1 more
↓ Administrative penalties: Statement of policy on the CMA’s … (40pp)
19 Dec 2024 | Consultation outcome Competition and Markets Authority linked

Updated CMA transparency and disclosure statement, including new overseas investigative assistance guidance — outcome published

The CMA is consulting on an updated version of transparency and disclosure: statement of the CMA’s policy and approach (CMA6).

▤ View document · ↗ GOV.UK · ↓ Consultation document (10pp)
+6 more
↓ Draft CMA6 consultation - Transparency and disclosure, Stat… (53pp) ↓ Draft CMA6 comparison document (94pp) ↓ Summary of responses to the consultation (16pp) ↓ Freshfields (9pp) ↓ Law Society Scotland (7pp) ↓ The City of London Law Society (3pp)
24 Jun 2024 | Consultation outcome Competition and Markets Authority linked

Updated CMA transparency and disclosure statement, including new overseas investigative assistance guidance — consultation closed

The CMA is consulting on an updated version of transparency and disclosure: statement of the CMA’s policy and approach (CMA6).

▤ View document · ↗ GOV.UK · ↓ Consultation document (10pp)
+6 more
↓ Draft CMA6 consultation - Transparency and disclosure, Stat… (53pp) ↓ Draft CMA6 comparison document (94pp) ↓ Summary of responses to the consultation (16pp) ↓ Freshfields (9pp) ↓ Law Society Scotland (7pp) ↓ The City of London Law Society (3pp)
24 May 2024 | Consultation outcome Competition and Markets Authority linked

Updated CMA transparency and disclosure statement, including new overseas investigative assistance guidance — consultation opened

The CMA is consulting on an updated version of transparency and disclosure: statement of the CMA’s policy and approach (CMA6).

▤ View document · ↗ GOV.UK · ↓ Consultation document (10pp)
+6 more
↓ Draft CMA6 consultation - Transparency and disclosure, Stat… (53pp) ↓ Draft CMA6 comparison document (94pp) ↓ Summary of responses to the consultation (16pp) ↓ Freshfields (9pp) ↓ Law Society Scotland (7pp) ↓ The City of London Law Society (3pp)

2021

1 event

2020

3 events
4 Nov 2020 | Consultation outcome Competition and Markets Authority linked

Revised CA98 procedures guidance — outcome published

The CMA consulted on proposed revisions to its published guidance on procedures for running Competition Act 1998 (CA98) cases.

▤ View document · ↗ GOV.UK · ↓ Consultation document (25pp)
+9 more
↓ Draft revised guidance on the CMA's investigation procedure… (87pp) ↓ Draft revised guidance on the CMA's investigation procedure… (96pp) ↓ Response to consultation (36pp) ↓ Ashurst (7pp) ↓ Baker McKenzie (3pp) ↓ Bristows (5pp) ↓ City of London Law Society Competition Law Committee (3pp) ↓ Herbert Smith Freehills (10pp) ↓ Linklaters (6pp)
11 Sep 2020 | Consultation outcome Competition and Markets Authority linked

Revised CA98 procedures guidance — consultation closed

The CMA consulted on proposed revisions to its published guidance on procedures for running Competition Act 1998 (CA98) cases.

▤ View document · ↗ GOV.UK · ↓ Consultation document (25pp)
+9 more
↓ Draft revised guidance on the CMA's investigation procedure… (87pp) ↓ Draft revised guidance on the CMA's investigation procedure… (96pp) ↓ Response to consultation (36pp) ↓ Ashurst (7pp) ↓ Baker McKenzie (3pp) ↓ Bristows (5pp) ↓ City of London Law Society Competition Law Committee (3pp) ↓ Herbert Smith Freehills (10pp) ↓ Linklaters (6pp)
5 Aug 2020 | Consultation outcome Competition and Markets Authority linked

Revised CA98 procedures guidance — consultation opened

The CMA consulted on proposed revisions to its published guidance on procedures for running Competition Act 1998 (CA98) cases.

▤ View document · ↗ GOV.UK · ↓ Consultation document (25pp)
+9 more
↓ Draft revised guidance on the CMA's investigation procedure… (87pp) ↓ Draft revised guidance on the CMA's investigation procedure… (96pp) ↓ Response to consultation (36pp) ↓ Ashurst (7pp) ↓ Baker McKenzie (3pp) ↓ Bristows (5pp) ↓ City of London Law Society Competition Law Committee (3pp) ↓ Herbert Smith Freehills (10pp) ↓ Linklaters (6pp)

2018

1 event
18 Apr 2018 | Consultation outcome Competition and Markets Authority linked

CA98 penalties guidance — outcome published

The CMA consulted on proposed revisions to its published guidance on penalty setting in Competition Act 1998 (CA98) cases.

▤ View document · ↗ GOV.UK · ↓ Consultation document: Draft revised CMA guidan… (23pp)
+14 more
↓ CMA’s guidance as to the appropriate amount of a penalty – … (28pp) ↓ CMA's guidance as to the appropriate amount of a penalty – … (29pp) ↓ Summary of responses to the consultation (13pp) ↓ American Bar Association (4pp) ↓ Charles Russell Speechlys LLP (1pp) ↓ Clifford Chance LLP (5pp) ↓ Ashurst LLP (7pp) ↓ Baker McKenzie (3pp) ↓ Davis Polk & Wardwell London LLP (4pp) ↓ Freshfields Bruckhaus Deringer LLP (5pp) ↓ Herbert Smith Freehills LLP (7pp) ↓ International Bar Association (10pp) ↓ United Utilities (1pp) ↓ Law Society of Scotland (4pp)

2017

2 events
27 Sep 2017 | Consultation outcome Competition and Markets Authority linked

CA98 penalties guidance — consultation closed

The CMA consulted on proposed revisions to its published guidance on penalty setting in Competition Act 1998 (CA98) cases.

▤ View document · ↗ GOV.UK · ↓ Consultation document: Draft revised CMA guidan… (23pp)
+14 more
↓ CMA’s guidance as to the appropriate amount of a penalty – … (28pp) ↓ CMA's guidance as to the appropriate amount of a penalty – … (29pp) ↓ Summary of responses to the consultation (13pp) ↓ American Bar Association (4pp) ↓ Charles Russell Speechlys LLP (1pp) ↓ Clifford Chance LLP (5pp) ↓ Ashurst LLP (7pp) ↓ Baker McKenzie (3pp) ↓ Davis Polk & Wardwell London LLP (4pp) ↓ Freshfields Bruckhaus Deringer LLP (5pp) ↓ Herbert Smith Freehills LLP (7pp) ↓ International Bar Association (10pp) ↓ United Utilities (1pp) ↓ Law Society of Scotland (4pp)
2 Aug 2017 | Consultation outcome Competition and Markets Authority linked

CA98 penalties guidance — consultation opened

The CMA consulted on proposed revisions to its published guidance on penalty setting in Competition Act 1998 (CA98) cases.

▤ View document · ↗ GOV.UK · ↓ Consultation document: Draft revised CMA guidan… (23pp)
+14 more
↓ CMA’s guidance as to the appropriate amount of a penalty – … (28pp) ↓ CMA's guidance as to the appropriate amount of a penalty – … (29pp) ↓ Summary of responses to the consultation (13pp) ↓ American Bar Association (4pp) ↓ Charles Russell Speechlys LLP (1pp) ↓ Clifford Chance LLP (5pp) ↓ Ashurst LLP (7pp) ↓ Baker McKenzie (3pp) ↓ Davis Polk & Wardwell London LLP (4pp) ↓ Freshfields Bruckhaus Deringer LLP (5pp) ↓ Herbert Smith Freehills LLP (7pp) ↓ International Bar Association (10pp) ↓ United Utilities (1pp) ↓ Law Society of Scotland (4pp)