UK REACH explained
Following the UK's withdrawal from the EU and the subsequent transition period, the EU REACH Regulation has been brought into UK law under the European Union (Withdrawal) Act 2018. REACH, and related legislation, have been replicated in the UK with the necessary changes to make it operable in a domestic context. The key principles of the EU REACH Regulation have been retained. The new domestic regime is known as UK REACH. The REACH Statutory Instrument can be found on legislation.gov.uk.
As of 1 January 2021 the UK REACH and the EU REACH regulations operate independently from each other. Companies that supply and purchase substances, mixtures or articles to and from the EU/EEA/Northern Ireland and Great Britain (England, Scotland and Wales) will need to ensure that the relevant duties are met under both pieces of legislation.
Under the Northern Ireland Protocol the EU REACH Regulation continues to apply to Northern Ireland, while UK REACH will regulate the access of substances to the GB market.