The table below shows the impact profile scores achieved by Imperial in REF 2021 for each unit of assessment (UoA) that the College submitted to. Imperial's institutional result is also given below.

 Impact quality profile (percentage of research activity at each quality level)      
UoA 4*3*2*1*u/cCat A FTE
1 - Clinical Medicine 73.3 26.7 0.0 0.0 0.0 438.9
2 - Public Health, Health Services and Primary Care 83.3 16.7 0.0 0.0 0.0 79.5
4 - Psychology, Psychiatry and Neuroscience 66.7 33.3 0.0 0.0 0.0 34.9
5 - Biological Sciences 35.7 57.2 7.1 0.0 0.0 92.4
8 - Chemistry 50.0 40.0 10.0 0.0 0.0 63.3
9 - Physics 50.0 44.4 5.6 0.0 0.0 130.1
10 - Mathematical Sciences 78.6 21.4 0.0 0.0 0.0 94.6
11 - Computer Science and Informatics 100.0 0.0 0.0 0.0 0.0 58.5
12 - Engineering 86.7 13.3 0.0 0.0 0.0 420.0
14 - Geography and Environmental Studies 87.5 12.5 0.0 0.0 0.0 45.7
17 - Business and Management Studies 57.1 42.9 0.0 0.0 0.0 92.2
Imperial College London (institutional result) 72.9 25.8 1.3 0 0 1549.9

Data definitions

AbbreviationDefinition
4* Outstanding impacts in terms of their reach and significance
3* Very considerable impacts in terms of their reach and significance
2* Considerable impacts in terms of their reach and significance
1* Recognised but modest impacts in terms of their reach and significance
u/c The impact is of little or no reach and significance; or the impact was not eligible; or the impact was not underpinned by excellent research produced by the submitted unit
Cat A Academic staff in post on 31 July 2020 and included in the REF submission
FTE Full-time equivalent