| 1 | Wilson's School Period 202425 | 100.0% | Grammar · Day · 6th | Wallington, London | Outstanding |
| 2 | St Olave's and St Saviour's Grammar School Period 202425 | 100.0% | Grammar · Day · 6th | Orpington, London | — |
| 3 | Wallington County Grammar School Period 202425 | 99.3% | Grammar · Day · 6th | Wallington, London | — |
| 4 | Sutton Grammar School Period 202425 | 99.2% | Grammar · Day · 6th | Sutton, London | Good |
| 5 | Queen Elizabeth's School, Barnet Period 202425 | 99.0% | Grammar · Day · 6th | Barnet, London | Outstanding |
| 6 | Tiffin School Period 202425 | 98.3% | Grammar · Day · 6th | Kingston upon Thames, London | Good |
| 7 | Beths Grammar School Period 202425 | 97.9% | Grammar · Day · 6th | Bexley, London | Good |
| 8 | Ilford County High School Period 202425 | 97.2% | Grammar · Day · 6th | Ilford, London | Good |
| 9 | Gunnersbury Catholic School Period 202425 | 80.7% | State · Day · 6th | Brentford, London | Outstanding |
| 10 | The Cardinal Vaughan Memorial RC School Period 202425 | 80.2% | Academy · Day · 6th | London, London | Outstanding |
| 11 | Finchley Catholic High School Period 202425 | 78.6% | State · Day · 6th | London, London | — |
| 12 | The London Oratory School Period 202425 | 77.6% | Academy · Day · 6th | London, London | Outstanding |
| 13 | Richard Challoner School Period 202425 | 74.7% | Academy · Day · 6th | New Malden, London | Outstanding |
| 14 | Hasmonean High School for Boys Period 202425 | 73.9% | Academy · Day · 6th | London, London | Good |
| 15 | The St Thomas the Apostle College Period 202425 | 72.0% | State · Day · 6th | London, London | — |
| 16 | The Fulham Boys School Period 202425 | 70.0% | Free School · Day · 6th | London, London | Good |
| 17 | Central Foundation Boys' School Period 202425 | 68.8% | State · Day · 6th | London, London | — |
| 18 | Wimbledon College Period 202425 | 68.6% | State · Day · 6th | London, London | — |
| 19 | Rutlish School Period 202425 | 67.4% | State · Day · 6th | London, London | — |
| 20 | Coombe Boys' School Period 202425 | 67.4% | Academy · Day · 6th | New Malden, London | — |
| 21 | The John Fisher School Period 202425 | 65.1% | State · Day · 6th | Purley, London | — |
| 22 | The Royal Liberty School Period 202425 | 64.6% | Academy · Day | Romford, London | — |
| 23 | St Ignatius College Period 202425 | 63.0% | State · Day · 6th | Enfield, London | — |
| 24 | The Campion School Period 202425 | 62.3% | Academy · Day · 6th | Hornchurch, London | — |
| 25 | Langley Park School for Boys Period 202425 | 59.8% | Academy · Day · 6th | Beckenham, London | — |