REUL(RR)A 2023: UK practitioners' guide to revocation, assimilated law, loss of EU supremacy, modification powers, UK courts, and impact on the Withdrawal Agreement and UK-EU TCA

Published by a LexisNexis Public Law expert

Practice notes

The Retained EU Law (Revocation and Reform) Act 2023 (REUL(RR)A 2023) received Royal Assent on 29 June 2023. Although less expansive than the initial proposal to disapply all retained EU law (REUL) by the end of 2023, it nonetheless delivers notable changes. This Practice Note outlines the impact of REUL(RR)A 2023, the reforms it introduces and the interpretation of assimilated law, the role of the courts, and how REUL(RR)A 2023 interfaces with the Withdrawal Agreement and the Trade and Co-operation Agreement (TCA) with the EU...

The European Union (Withdrawal) Act 2018 (EU(W)A 2018)

To understand the operation of REUL(RR)A 2023, one must return to the European Union (Withdrawal) Act 2018 (EU(W)A 2018). For background on EU(W)A 2018, see Practice Note: Brexit—key legislation explained. After the Brexit implementation period concluded on 31 December 2020, EU(W)A 2018 established a fresh category of domestic law—REUL. REUL consisted of several distinct ‘baskets’ of law:

EU-derived domestic legislation, encompassing both primary Acts and secondary instruments enacted to meet the UK’s EU obligations (EU(W)A 2018, s 2)
retained direct EU legislation—principally directly effective EU regulations and decisions...

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Dr. Kieran Laird

Gowling WLG

Kieran is an ex-academic with a particular interest in areas where law and politics intersect. He is a partner in Gowling WLG's Public Law & Regulation team and Head of Constitutional Affairs for the firm's Brexit Unit.Kieran provides advice on the applicability of, and developments in, the statutory and regulatory frameworks governing a number of regulated sectors including energy, qualifications, transport, health, communications, and political lobbying. Kieran advises a range of clients including sector regulators, consumer councils, government departments, other public bodies, major corporates, and small and medium sized enterprises with regard to their respective regulated industries, equalities and human rights duties, EU law and other public law matters....

Web page updated on 21/05/2026

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