The table below shows the overall 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.

 Overall quality profile (percentage of research activity at each quality level)      
UoA 4*3*2*1*u/cCat A FTE
1 - Clinical Medicine 60 34 6 0 0 438.9
2 - Public Health, Health Services and Primary Care 78 21 1 0 0 79.5
4 - Psychology, Psychiatry and Neuroscience 75 24 1 0 0 34.9
5 - Biological Sciences 53 41 6 0 0 92.4
8 - Chemistry 68 30 2 0 0 63.3
9 - Physics 49 47 4 0 0 130.1
10 - Mathematical Sciences 69 31 0 0 0 94.6
11 - Computer Science and Informatics 93 7 0 0 0 58.5
12 - Engineering 75 24 1 0 0 420.0
14 - Geography and Environmental Studies 48 41 9 2 0 45.7
17 - Business and Management Studies 70 27 2 1 0 92.2
Imperial College London (institutional result) 66.3 30.3 3.2 0.1 0.0 1549.9

Data definitions

AbbreviationDefinition
4* Quality that is world-leading in terms of originality, significance and rigour
3* Quality that is internationally excellent in terms of originality, significance and rigour but which falls short of the highest standards of excellence
2* Quality that is recognised internationally in terms of originality, significance and rigour
1* Quality that is recognised nationally in terms of originality, significance and rigour
u/c Quality that falls below the standard of nationally recognised work. Or work which does not meet the published definition of research for the purposes of this assessment
Cat A Academic staff in post on 31 July 2020 and included in the REF submission
FTE Full-time equivalent