To support companies for the UK’s exit, REACHReady together with the Chemical Industries Association (CIA) have identified a number of frequently asked questions focusing on REACH, Classification, Labelling and Packaging (CLP) and Biocidal Product (BPR) Regulation.

Use our Brexit navigator to understand your REACH obligations for maintaining UK and EU market access.

Note: The regulatory deadlines to grandfather UK registrations and to notify EU registered substances imported in Great Britain have now passed.  If you have missed the grandfathering deadline (30 April 2021), please contact HSE at If you did not submit a downstream user notification (DUIN) in time (by 27 October 2021), for the time being you can still notify as the HSE submission process is still open. 

Please note that - in July 2023 - the UK REACH registration deadlines for transitional registrations have been extended across all tonnage bands by 3 years. This means an extension from the previous deadlines on 27 October 2023, 2025, 2027 respectively to 27 October 2026, 2028, 2030. The deadlines have been extended to give time to DEFRA to develop an alternative registration model for transitional registrations. The requirements related to the hazard assessment as well as use and exposure information for transitional registrations have not been finalised yet. We will continue to keep you informed as new information emerges. 

For all Gold subscribers, REACHReady continues to answer any specific questions you may have on Brexit and chemicals regulation through the helpdesk. Please contact us via


GB-based manufacturer
 GB-based importer
GB downstream user
GB authorisation holder 

GB company relying 
on EU authorisation
GB company exempt
through PPORD
GB-based OR

EU based downstream user




Guidance documents: 


New Article 26 Inquiries detailed guidance - GB and EU REACH 

REACHReady’s Brexit Frequently Asked Questions 

CIA and Cefic joint guidance - Brexit: Preparing for a future UK out of REACH Scenario