Written Question·Home Office·UIN 120393

Animal Experiments

Tabled: 12 March 2026

Answered: 19 March 2026

Question

Ruth Jones

To ask the Secretary of State for the Home Department, how many animals were used in LD50 tests to evidence compliance with UK-only regulations in each of the last five years.

Answer

Sarah Jones

The Home Office publishes detailed annual statistics on the use of animals in science, including procedures for acute and subacute toxicity testing which covers tests such as LD50 (Lethal Dose 50) and LC50 (Lethal Concentration 50). These figures represen...

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