Numbers of animals

YearNumber of animals used in research at Imperial
2017 97,787
2016 101,369
2015 101,179
2014 111,874
2013 130,358
2012 123,547
2011 106,772
2010 139,725
2009 125,566
2008 115,282

Types of animals used in 2017

Type of animalNumberPercentage
Mice 88024 90.01%
Rats 4487 4.58%
Fish 4653 4.75%
Guinea-pigs 383 0.39%
Birds 144 0.14%
Rabbits 86 0.08%
Ferrets 10 0.01%

Breakdown of the number of procedures in 2017 using the different classifications of procedure as defined by the Home Office

User Guide to Annual Home Office Statistics of Scientific Procedures on Living Animals Great Britain (pdf)

  Zebrafish Mouse Rat Guinea-pig Rabbit Ferret Bird  
Severity                
Sub threshold 1,544 18,784 349 0 0 0 0 20,677
Mild 1,617 35,490 351 34 2 10 111 37,615
Moderate 798 13,483 2,863 197 10 0 0 17,351
Severe 35 513 42 2 2 0 0 594
Non-recovery 126 2,621 408 47 53 0 0 3,255
                Total
Total number of scientific procedures carried out under project licence authority 4,120 70,891 4,013 280 67 10 111 79,492
Total number of animals used under project licence authority 4,120 70,891 4,013 280 67 10 111 79,492
Animals used for breeding or tissue collection purposes 533 17,133 474 103 19 0 33 18,295
Total numbers 4,653 88,024 4,487 383 86 10 144 97,787

Types of animals used in:

2016

Type of animalNumberPercentage
Mice 87,389 86.21%
Rats 6,403 6.32%
Fish 6,304 6.22%
Guinea-pigs 531 0.52%
Birds 509 0.50%
Amphibians 146 0.14%
Rabbits 72 0.07%
Ferrets 15 0.01%

Breakdown of the number of procedures in 2016 using the different classifications of procedure as defined by the Home Office

User Guide to Annual Home Office Statistics of Scientific Procedures on Living Animals Great Britain (pdf)

  Zebrafish Mouse Rat Guinea-pig Rabbit Ferret Bird Amphibian  
Severity                  
Sub threshold 2,702 23,480 1,078 0 0 0 0 0  
Mild 931 34,550 507 55 3 11 506 0  
Moderate 2,176 18,078 3,499 306 17 2 0 0  
Severe 325 174 48 1 1 2 0 146  
Non-recovery 23 2,476 388 40 45 0 0 0  
                  Total
Total number of scientific procedures carried out under project licence authority 6,157 78,758 5,520 402 66 15 506 146 91,570
Total number of animals used under project licence authority 6,157 78,758 5,520 402 66 15 506 146 91,570
Animals used for breeding or tissue collection purposes 147 8,631 883 129 6 0 3 0 9,799
Total numbers 6,304 87,389 6,403 531 72 15 509 146 101,369

2015

Type of animalNumberPercentage
Mice 84,238 83.26%
Fish 10,477 10.35%
Rats 5,927 5.86%
Guinea-pigs 266 0.26%
Rabbits 213 0.21%
Amphibians 42 0.04%
Ferrets 16 0.02%

2014

Type of animalNumberPercentage
Mice 93,543 83.61%
Fish 10,685 9.55%
Rats 6,853 6.13%
Guinea-pigs 256 0.23%
Other rodents 252 0.23%
Rabbits 209 0.19%
Amphibians 56 0.05%
Ferrets 20 0.02%

2013

Type of animalNumberPercentage
Mice 117,707 90.29%
Rats 8,356 6.41%
Fish 3,287 2.53%
Birds 536 0.41%
Guinea-pigs 252 0.19%
Rabbits 140 0.11%
Ferrets 36 0.03%
Other rodents 44 0.03%

2012

Type of animalNumberPercentage
Mice 112,620 91.15%
Rats 8,852 7.16%
Fish 916 0.74%
Guinea-pigs 602 0.49%
Amphibians 303 0.25%
Rabbits 220 0.18%
Ferrets 28 0.02%
Pigs 6 0.01%

These figures are provided each year to the Home Office, which publishes annual statistics on the use of animals in scientific research in Great Britain.