Research and analysis

Assimilated Law Parliamentary Report: June 2025 to December 2025 executive summary

Updated 15 January 2026

This executive summary duplicates that in the PDF version of the Assimilated Law Parliamentary Report: June 2025 to December 2025 report.

Executive summary

The Retained EU Law Bill received Royal Assent on 29 June 2023. Section 17 of the act requires the Secretary of State to report to Parliament on REUL and assimilated law every 6 months until 23 June 2026. Under the legislation, the report must:

(a) provide a summary of the data on the assimilated law dashboard

(b) set out the “progress that has been made in revoking and reforming” assimilated law during the reporting period to which the report relates

(c) set out His Majesty’s Government’s plans to revoke and reform assimilated law in subsequent reporting periods

To begin with, this report provides an update on the Retained EU Law (REUL) and assimilated law dashboard. The dashboard provides the public with information on the amount of assimilated law (formerly known as REUL) and where it sits across departments. The dashboard was updated on 15 January 2026 and reflects the position as on 23 December 2025.

Since the last update, departments have undertaken further analysis and amended their record of assimilated law. The total number of assimilated laws now stands at 6,925 instruments concentrated over approximately 400 unique policy areas on the dashboard.

Since the previous update to the dashboard, 61 assimilated law instruments have either been revoked or reformed. As a result, a net figure of 2,572 instruments have now been revoked or reformed in total.

The report then provides a list of revocations and reforms enacted during the reporting period (24 June 2025 to 23 December 2025). Since the publication of the last Assimilated Law Parliamentary Report, this government laid one statutory instrument (SI) using powers under the REUL Act to amend assimilated law, and one SI using powers under the REUL Act and other legislative powers. This is detailed in the section ‘Detailed list of Revocations and Reforms’. This government laid a further 23 SIs revoking and reforming assimilated law under other domestic legislation, including, for example, SIs made under the Economic Crime and Corporate Transparency Act 2023.

The government remains committed to supporting economic growth by reforming assimilated law to:

• create a pro-business environment
• foster innovation
• reduce regulatory burdens

Looking ahead, the government will use REUL Act powers (ahead of their expiry in June 2026) and progress reform of assimilated law to ensure regulation creates the conditions for sustainable growth and is aligned with consumer and environmental protections.

This commitment to effective regulation is reflected in recent initiatives, including the business questionnaire ‘Unlocking Business: Reform Driven by You’, launched on 21 October 2025, which will inform future reforms.

We will also reform assimilated law in the context of the government’s national missions as well as our work with the devolved governments to deliver for people across the UK. We will continue to be guided by this government’s work to strengthen its new strategic partnership with the EU. The government will continue to update Parliament as to the detail of our plans for assimilated law.

Finally, the report confirms that no further restatements or codifications related to so-called “section 4 rights” were required in this reporting period.