
Great BritainGB Biocidal Products Regulation
Key Biocides Set For Expiry In Great Britain: Reminder By UK HSE
Stay informed on biocides regulations in GB. Key active substance authorisations expire by 2025.
Published in November 2024. Dates, deadlines and stages may have changed since.
2 min readAI-drafted, expert reviewed

Biocidal product authorisations in Great Britain (GB) are set to expire for multiple active substances over the coming year. Businesses holding GB Biocidal Products Regulation (GB BPR) product authorisations or Control of Pesticides Regulations (COPR) product approvals must ensure compliance or face revocation.
Key Expiry Dates
31 January 2025
Diflubenzuron (CAS 35367-38-5, EC 252-529-3) in product type 18.Formaldehyde (CAS 50-00-0, EC 200-001-8) in product type 2.Powdered corn cob (product type 14).Thiamethoxam (CAS 153719-23-4, EC 428-650-4) in product type 18.
30 April 2025
Chlorfenapyr (CAS 122453-73-0, EC 602-782-4) in product type 8.
31 October 2025
Lauric acid (CAS 143-07-7, EC 205-582-1) in product type 19.Synthetic amorphous silicon dioxide (nano) (CAS 112926-00-8, EC 231-545-4) in product type 18.
Implications And Compliance
Once these approvals lapse, related biocidal products and treated articles cannot be marketed in GB. The Health and Safety Executive (HSE) will notify affected holders about cancellations and will consider any feedback provided. Companies are urged to contact HSE if negative impacts from these expirations are anticipated.
Official source
content.govdelivery.com
Dr Steven Brennan
CEO and co-founder of Foresight, and a co-opted member of ECHA's Committee for Socio-economic Analysis. He holds a PhD in chemical engineering.
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