Chemical regulatory compliance for Great Britain (UK REACH and GB CLP)
Great Britain operates its own independent chemicals framework post-Brexit. We support UK REACH registration, GB CLP classification and labelling, and safety data sheet preparation for the GB market.
Great Britain runs its own framework
Since 1 January 2021 Great Britain (England, Scotland and Wales) has operated its own independent chemicals framework, separate from the European Union. UK REACH is the domestic version of REACH, and GB CLP is the domestic version of CLP for classification, labelling and packaging. Both are administered by the Health and Safety Executive (HSE), with the Environment Agency involved on the environmental side. The Department for Environment, Food and Rural Affairs (Defra) is the policy department.
An EU REACH registration held by an EU-based entity has no legal standing in Great Britain. Companies placing substances on the Great Britain market must satisfy UK REACH in its own right. Northern Ireland is the exception: under the Windsor Framework it continues to follow EU REACH and EU CLP, so products placed on the Northern Ireland market follow EU rules.
UK REACH: who has to register, and when
UK REACH requires the registration of substances manufactured in or imported into Great Britain at or above one tonne per year per legal entity. Businesses based outside Great Britain cannot register directly. They typically appoint a GB-based Only Representative to hold the registration on their behalf, or the obligation falls on the GB importer.
For substances that were already registered under EU REACH before Brexit, a transitional route (originally UK REACH grandfathering, now the Alternative Transitional Registration Model) applies, with staged deadlines running to 27 October 2026, 2028 and 2030 depending on tonnage band and hazard profile. New substances not previously registered follow the standard UK REACH registration process.
GB CLP: classification and labelling for Great Britain
GB CLP governs how substances and mixtures are classified for hazard, how those hazards are communicated on the label, and how the products are packaged for supply into Great Britain. It is closely aligned with EU CLP in structure, but it is a separate legal instrument with a GB list of Mandatory Classification and Labelling (GB MCL) that must be applied when it covers a substance in scope.
Labels for the Great Britain market must carry the GB supplier's details, the product identifier, hazard pictograms, signal word, hazard statements and precautionary statements, and be in English. Poison centre notification obligations for hazardous mixtures apply through the National Poisons Information Service arrangements rather than the EU ECHA portal.
Safety data sheets for the GB market
Safety data sheets supplied for the Great Britain market follow the content and format requirements set under UK REACH. The structure mirrors EU SDS closely, but the regulatory references, competent authority and the responsible person's details must be GB-appropriate. A safety data sheet prepared for the EU market is not automatically valid in Great Britain and typically needs a GB pass rather than a translation.
What Chemply delivers for the UK
We support UK REACH obligations including acting as your GB-facing Only Representative through partner arrangements where required, categorising and preparing the registration route that applies to your substances, screening formulations against GB MCL and the wider restriction and authorisation lists, and preparing GB CLP classification and labelling. We prepare safety data sheets for the Great Britain market and, where a product is sold into both the EU and GB, align the two documents so they are consistent while respecting the differences the two regimes require.
Frequently asked questions
Does an EU REACH registration cover Great Britain?
No. UK REACH is a separate legal framework, and an EU registration held by an EU entity does not carry across. A GB registration route is required for substances placed on the Great Britain market.
Who needs to register under UK REACH?
Manufacturers in Great Britain and importers into Great Britain who bring a substance to the market at or above one tonne per year per legal entity. Businesses based outside Great Britain generally cannot register directly and typically appoint a GB-based Only Representative.
What is a GB Only Representative?
A natural or legal person established in Great Britain, appointed by a non-GB manufacturer to take on that manufacturer's UK REACH obligations for its imported substances, so that the GB importer is treated as a downstream user.
When are UK REACH registration deadlines?
Under the Alternative Transitional Registration Model, staged deadlines run to 27 October 2026, 2028 and 2030 depending on tonnage band and hazard profile. New substances not previously registered follow the standard UK REACH registration timeline.
Does Northern Ireland follow UK REACH?
No. Under the Windsor Framework, Northern Ireland continues to follow EU REACH and EU CLP for products placed on the Northern Ireland market. UK REACH and GB CLP apply to Great Britain (England, Scotland and Wales).
Can you convert our EU safety data sheet for the GB market?
Yes. This is common work. It usually involves updating the regulatory references, the competent authority details and the responsible person to be GB-appropriate under UK REACH, rather than a simple translation.
Ready to launch in Great Britain?
Tell us about your product and target market. We'll respond within one business day with a fixed-price quote and a delivery timeline.