The following are the top 20 schools in the official RAE survey in 2008.
Pure mathematics, pure mathematics
1 London Imperial College London
2 Warwick University
University of Oxford
4 Cambridge University
5 Bristol University
Joint course of Edinburgh University and Heriot Watt University
7 Bath University
King's College
University of Aberdeen
10 University of Manchester
1 1 University College London
12 Durham university
13 University of East Anglia
14 University of Sheffield
15 University of Glasgow
16 University of Birmingham
17 University of Nottingham
18 Queen Mary College London
19 Loughborough University
20 University of Exeter
applied mathematics
1 Cambridge University
University of Oxford
3 Warwick University
4 Bristol University
5 University of St Andrews
6 University of Manchester
7 Bath University
Imperial college London
Nottingham University
10 Portsmouth University
1 1 Durham University
12 University of Southampton
13 University of Surrey
14 Courses jointly organized by Edinburgh University and Heriot Watt University
15 king's college London
16 University of Liverpool
17 Newcastle University
18 Kiel University
19 University of Leeds
20 University of Exeter
Note: Don't read business rankings such as The Times or The Guardian. Their main basis is also based on this RAE. RAE represents the real level of the school and is the official data. University funding is also based on this.