Factsheet
Recorded statistics of animal research procedures
Updated on 10 May 2024
Details of recorded animal research procedures from 2019 - 2023.
On this page
Number of regulated procedures recorded between 2019-2023
| 2019 | 2020 | 2021 | 2022 | 2023 | |
| TOTAL | 32,670 | 20,262 | 22,502 | 22,312 | 21,299 |
| Mouse | 31,579 | 19,928 | 22,336 | 22,064 | 20,906 |
| Rat | 988 | 256 | 155 | 203 | 173 |
| Frog | 103 | 78 | 11 | 45 | 220 |
Scientific purpose of mice recorded between 2019-2023
| Mice | 2019 | 2020 | 2021 | 2022 | 2023 |
| TOTAL | 31,579 | 19,928 | 22,336 | 22,064 | 20,906 |
| Breeding Established Lines | 20,827 | 13,961 | 13,163 | 12,794 | 12,046 |
| Other Scientific Use | 10,752 | 5,967 | 9,173 | 9,270 | 8,860 |
Actual severities experienced by all species recorded between 2019 and 2023
| Severity | 2019 | 2020 | 2021 | 2022 | 2023 |
| TOTAL | 32,670 | 20,262 | 22,502 | 22,312 | 21,299 |
| Sub Threshold | 21,591 | 14,777 | 15,484 | 15,935 | 13,795 |
| Mild | 7,633 | 4,165 | 5,305 | 4,135 | 4,790 |
| Moderate | 2,784 | 884 | 1,235 | 1,719 | 2,312 |
| Severe | 83 | 21 | 84 | 23 | 10 |
| Non recovery | 579 | 415 | 394 | 500 | 392 |
Number of non-regulated procedures recorded between 2019-2023
In 2017, the Home Office required the Establishment to count the use of animals bred for scientific purposes but not used in any regulated procedure. In subsequent years, the University has continued to collect these summary data.
| 2019 | 2020 | 2021 | 2022 | 2023 | |
| TOTAL | 5,814 | 4,048 | 2,909 | 3,766 | 2,934 |
| Mice | 5,109 | 3,740 | 2,176 | 2,877 | 2,195 |
| Rats | 705 | 308 | 733 | 889 | 739 |
| Rehomed rats | 5 | 26 | 9 | 3 | 12 |
Animals in research
Further information about the University's policies to minimise the use of animals in research.
Biological Services