| 1 | Wilson's School Period 202425 | 8.66 | Grammar · Day · 6th | Wallington, London | Outstanding |
| 2 | Queen Elizabeth's School, Barnet Period 202425 | 8.55 | Grammar · Day · 6th | Barnet, London | Outstanding |
| 3 | St Olave's and St Saviour's Grammar School Period 202425 | 8.22 | Grammar · Day · 6th | Orpington, London | — |
| 4 | Tiffin School Period 202425 | 7.61 | Grammar · Day · 6th | Kingston upon Thames, London | Good |
| 5 | Sutton Grammar School Period 202425 | 7.46 | Grammar · Day · 6th | Sutton, London | Good |
| 6 | Ilford County High School Period 202425 | 7.33 | Grammar · Day · 6th | Ilford, London | Good |
| 7 | Wallington County Grammar School Period 202425 | 7.25 | Grammar · Day · 6th | Wallington, London | — |
| 8 | Beths Grammar School Period 202425 | 6.51 | Grammar · Day · 6th | Bexley, London | Good |
| 9 | Gunnersbury Catholic School Period 202425 | 6.09 | State · Day · 6th | Brentford, London | Outstanding |
| 10 | The London Oratory School Period 202425 | 5.98 | Academy · Day · 6th | London, London | Outstanding |
| 11 | The Cardinal Vaughan Memorial RC School Period 202425 | 5.87 | Academy · Day · 6th | London, London | Outstanding |
| 12 | The St Thomas the Apostle College Period 202425 | 5.69 | State · Day · 6th | London, London | — |
| 13 | The Fulham Boys School Period 202425 | 5.59 | Free School · Day · 6th | London, London | Good |
| 14 | Richard Challoner School Period 202425 | 5.57 | Academy · Day · 6th | New Malden, London | Outstanding |
| 15 | Rutlish School Period 202425 | 5.54 | State · Day · 6th | London, London | — |
| 16 | Wimbledon College Period 202425 | 5.43 | State · Day · 6th | London, London | — |
| 17 | Hasmonean High School for Boys Period 202425 | 5.35 | Academy · Day · 6th | London, London | Good |
| 18 | Coombe Boys' School Period 202425 | 5.25 | Academy · Day · 6th | New Malden, London | — |
| 19 | Finchley Catholic High School Period 202425 | 5.16 | State · Day · 6th | London, London | — |
| 20 | Central Foundation Boys' School Period 202425 | 5.09 | State · Day · 6th | London, London | — |
| 21 | Harris Boys' Academy East Dulwich Period 202425 | 5.02 | Academy · Day · 6th | London, London | Outstanding |
| 22 | Langley Park School for Boys Period 202425 | 5.01 | Academy · Day · 6th | Beckenham, London | — |
| 23 | The John Fisher School Period 202425 | 4.99 | State · Day · 6th | Purley, London | — |
| 24 | St Ignatius College Period 202425 | 4.89 | State · Day · 6th | Enfield, London | — |
| 25 | The Campion School Period 202425 | 4.85 | Academy · Day · 6th | Hornchurch, London | — |