Question to the Home Office:

To ask the Secretary of State for the Home Department, with reference to her Department's document entitled, Annual Statistics of Scientific Procedures on Living Animals Great Britain 2019, for what reasons there was an increase in the use of first-generation primates in experiments from (a) 2017 to 2018 and (b) 2018 to 2019.

With reference to the report entitled Statistics of Scientific Procedures on Living Animals Great Britain 2019, published in July 2020, the change in the published figures for the first-generation primates (F1) from 2017 to 2018 and from 2018 to 2019 was is likely to be because of confusion amongst those establishments supplying the data over the definition of a self-sustaining colony. Some establishments reported the number of F1 non-human primates within a self-sustaining colony.