On 5 September 2023, the UK Health and Safety Executive (HSE) announced the publication of new guidance on how to meet aspects of the residue data requirements. The new guidance will apply from 1 January 2024. The guidance is referred to as the ‘GB Extrapolation Guidance 2024’ and only applies to Great Britain (England, Scotland, and Wales).

GB Extrapolation Guidance 2024

The purpose of GB Extrapolation Guidance 2024 is to advice applicants on the requirements for residue trials data to support the registration of plant protection products (PPP) and for setting maximum residue levels (MRLs) in Great Britain (GB). The guidance sets out the technical requirements in the following areas:

• the data and information requirements for residue trials, e.g. trial location, number of residue trials, etc

• the comparability of residue trials and deviations from Good Agricultural Practice (GAP)

• the extrapolation of residue data for products of plant and animal origin

• the establishment of maximum residue levels (MRLs)

The preview of the GB Extrapolation Guidance 2024 can be found here. It replaces the previous version of the extrapolation document SANCO 7525/VI/95 Rev. 10.3.