Question to the Home Office:

To ask the Secretary of State for the Home Department, with reference to the Animals in Science Regulation Unit Annual Report 2024, published in December 2025, what assessment she has made of the potential implications for her policies of the incident in which mice were found to have drowned; whether she has made an assessment of the adequacy of the letter of reprimand being issued as a sanction; and what steps her Department is taking to prevent animals who are being kept for the purpose of scientific experiments from drowning.

All licensed establishments must fully uphold the required standards for animal welfare as set out in the Animals (Scientific Procedures) Act 1986 (ASPA) and the Code of Practice for the Housing and Care of Animals Bred, Supplied or Used for Scientific Purposes. The Animals in Science Regulation Unit (ASRU) conducts audits to assure establishments’ compliance and takes matters of non-compliance very seriously.

ASRU has published its compliance framework (www.gov.uk/guidance/animal-testing-and-research-compliance-with-aspa) which explains how it identifies and investigates potential incidents of non-compliance and decides on appropriate and proportionate measures and remedies where non-compliance has been found to occur. Through delivery of the compliance policy the Regulator aims to reduce the risk of future non-compliance.

All cases of non-compliance are thoroughly investigated, and the outcomes are published in ASRU’s annual report.