Jurisdiction(s):
United Kingdom

Related legal acts

Key definition

Environmental impact assessment definition

What does Environmental impact assessment mean? An environmental impact assessment (EIA) is the statutory process used in planning and other consenting regimes to identify, evaluate and mitigate the likely significant effects of a proposed project on the environment before planning permission or other development consent is granted. It is defined in legislation: in England and Wales by the Town and Country Planning (Environmental Impact Assessment) Regulations 2017 (with sectoral EIA regimes, including for nationally significant infrastructure and marine works); in Scotland by the Town and Country Planning (Environmental Impact Assessment) (Scotland) Regulations 2017; in Northern Ireland by the Planning (Environmental Impact Assessment) Regulations (Northern Ireland)...

UK offshore oil and gas: EIAs and environmental permitting—regulatory framework, procedures, offences and recent developments (assimilated law, OPRED guidance and scope 3 emissions)

Published by a LexisNexis Energy expert

Practice notes

brexit impact

At 11pm (GMT) on 31 December 2020, the transition/implementation phase that followed the UK’s departure from the EU came to a close. That moment—known in UK law as ‘IP completion day’—ended core transitional measures and triggered wide-ranging changes across the UK legal framework. Any updates relevant to this content are outlined below.

On IP completion day, the European Union (Withdrawal) Act 2018 (EU(W)A 2018) introduced a distinct category of domestic UK law—retained EU law (REUL)—consisting of EU-derived rights and legislation preserved in the UK after Brexit.

On 29 June 2023, the Retained EU Law (Revocation and Reform) Act 2023 (REUL(RR)A 2023) received Royal Assent. It reshapes the treatment of REUL by:

revoking substantial elements of REUL from 31 December 2023
re-labelling REUL as ‘assimilated law’ from 1 January 2024
creating new powers in relation to assimilated law

This re-categorisation to assimilated law marks a change in its status and handling under UK law, meaning it is generally interpreted in line with ordinary domestic legal principles...

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Lynne Gray

Burness Paull

Lynne is head of Burness Paull’s health & safety and corporate crime team. She advises major corporate clients responding to incidents, facing investigation or prosecution from authorities, including Police Scotland, the Health and Safety Executive, SEPA, the Offshore Major Accident Regulator and OPRED. Lynne has considerable experience of regulatory investigations and enforcement specialising in cases involving crisis management, fatalities and major health, safety and environmental incidents. She has a particular expertise in complex energy cases and casualty cases, being involved in several high-profile investigations and legal proceedings in the last ten years, including onshore and offshore helicopter accidents. Lynne is skilled in managing and supporting clients through all aspects of an incident, through lengthy and complex technical investigations to final resolutions.Lynne also provides advice and guidance to board members, employers, and individuals with management responsibilities for compliance with regulatory duties. She is...

Eilidh McSherry

Burness Paull

Eilidh is a senior solicitor in Burness Paull’s health & safety and corporate crime team. She is qualified in Scotland, England, and Wales, and has experience in advising clients in response to HSE and OPRED regulatory investigations. Eilidh often supports clients in developing and implementing compliance programmes, including in relation to modern slavery, fraud, sanctions, bribery and corruption. In particular, she has worked with a range of offshore and onshore energy clients, and has public and private sector experience in renewables, which gives her a strong understanding of issues affecting those across the energy sector. Eilidh is well-placed to assist with advice, responding to regulatory investigations, and compliance with legislative changes. ...

Web page updated on 22/05/2026

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