UK REACH Compliance: Post-Brexit Chemical Guide
When the UK left the EU's single market, it established an independent chemicals regulatory framework — UK REACH — enforced by the Health and Safety Executive (HSE) rather than ECHA. DEFRA has since estimated that full transition to the UK REACH model could cost British industry over £2 billion in duplicative testing, and in May 2024 the government published an Alternative Transition Model (ATR) proposal to reduce that burden by accepting certain EU REACH data. The registration deadlines have been extended to October 2026, 2028, and 2030 depending on tonnage band — but the fundamental requirement has not changed: EU REACH registrations have zero legal standing in Great Britain.
UK REACH is now a distinct regulatory framework governing chemicals placed on the Great Britain market. If your company moves chemicals, mixtures, or articles containing substances of very high concern (SVHCs) between the EU and the UK, you are navigating two separate regimes. On the Sustalium platform, UK-specific registration is the single most misunderstood requirement we see — companies consistently assume their EU REACH dossier covers the UK market, and they are consistently wrong.