- 99% of procedures carried out in mice, fish, rats, and birds
- 82% of procedures caused pain equivalent to, or less than, an injection
- 69 research institutions and funders have proactively shared their 2025 animal research statistics
Understanding Animal Research (UAR) has published a list of the ten organisations, which includes the University of Manchester, that carried out the highest number of animal procedures – those used in medical, veterinary, and scientific research – in Great Britain in 2025. These statistics are freely available on the organisations’ websites as part of their ongoing commitment to transparency and openness around the use of animals in research.
This list coincides with the publication of the Home Office’s report on the statistics of scientific procedures on living animals in Great Britain in 2025.
The ten listed organisations were responsible for 1,347,667 procedures, 53% (more than half) of the 2,537,507 procedures carried out on animals for scientific research in Great Britain in 2025*. Of these 1,347,667 procedures, more than 99% were carried out on mice, fish, rats, and birds and 82% were classified as causing pain equivalent to, or less than, an injection.
