The United Kingdom’s exit from the European Union marked a turning point for companies operating in the chemical safety sector. Since 2020, the UK regulatory framework has progressively evolved independently from the European one, creating a parallel system that now requires specific expertise, continuous updates and structured processes to be managed effectively.
For European companies exporting substances and chemical mixtures to Great Britain, this is not just a formal adjustment. Managing SDS (Safety Data Sheets), CLP classification and REACH registrations now requires a structural revision of internal processes, with a direct impact on compliance, costs and time-to-market.
In this context, understanding how UK REACH and GB CLP work is not only a regulatory necessity, but a strategic lever to remain competitive.
To support companies placing chemical products on the UK market, this article outlines the key information you need to know, followed by frequently asked questions.
What are UK REACH and GB CLP and where do they apply
UK REACH is the regulation governing the registration, evaluation, authorisation and restriction of chemicals in Great Britain.
GB CLP regulates the classification, labelling and packaging of substances and mixtures.
Both frameworks are inspired by their EU counterparts, REACH and CLP, but now operate independently, leading to increasing divergence between the European and UK systems.
UK REACH and GB CLP apply to substances and mixtures placed on the market in Great Britain, namely England, Scotland and Wales.
Northern Ireland, although part of the UK, continues to follow EU legislation under the Northern Ireland Protocol.
UK REACH and GB CLP: key obligations for companies placing products on the UK market
Entering the UK market involves specific responsibilities for companies placing chemical substances and mixtures. These obligations directly affect product safety and legal compliance and must be managed carefully.
Under GB regulations, suppliers must:
- Register substances placed on the market in quantities of one tonne or more per year
- Provide Safety Data Sheets compliant with Article 31 of UK REACH
- Comply with requirements related to substances subject to authorisation and/or restriction
- Notify the classification and labelling of hazardous substances to the HSE
- Ensure correct classification, labelling and packaging in accordance with GB CLP
SDS and compliance: the real critical point post-Brexit
One of the most common mistakes companies make concerns the management of Safety Data Sheets. European SDS are often assumed to be reusable for the UK market, but this is a risky oversimplification.
SDS must be adapted to the UK REACH and GB CLP framework, taking into account local regulatory requirements. This includes not only technical content, but also format, language and update processes.
There are also important differences in notification requirements. The European PCN notification is not valid in Great Britain, where a separate communication must be made to the NPIS system.
Frequently asked questions on UK REACH and GB CLP
Do UK REACH and GB CLP apply to EU companies?
Not directly. Obligations fall on manufacturers, importers and downstream users established in Great Britain.
However, EU companies can appoint an Only Representative (OR) to manage compliance obligations on their behalf.
Do I need to notify hazardous mixtures to ECHA for the UK market?
No. The European PCN notification does not apply in Great Britain.
Instead, a voluntary notification to NPIS is possible by submitting the SDS.
For Northern Ireland, EU rules still apply and notification to ECHA remains mandatory.
Can I use EU SDS and labels for the UK market?
No. SDS and labels must be adapted to UK-specific requirements under UK REACH and GB CLP.
What are the main differences between EU and UK frameworks?
UK REACH remains broadly aligned with EU REACH in structure, but differs in:
- Registration authority (HSE vs ECHA)
- SDS management (based on EU 830/2015 format but adapted)
- Authorisation and restriction lists (aligned only until 31 December 2020)
GB CLP differs in:
- Independent harmonised classification (UK MCL – revision 7)
- Lack of adoption of new EU hazard classes
- EU Regulation 2024/2865 updates not applicable in the UK
We will explore these topics in more depth in our upcoming webinar.
👉 Register for free here:
https://webinar.epy.it/en/product/reach-and-clp-after-brexit-eu-vs-uk-framework/
