| 1 | Queen Elizabeth's School, Barnet | 76.3 compositeOfsted15.3 AAB%15.1 VA10.9 Att817.1 EM5+17.8 | Grammar · Day · 6th | Barnet, London | Outstanding 2022-05-17×0.85 |
| 2 | Wilson's School | 74.9 compositeOfsted15.3 AAB%14.3 VA10.0 Att817.4 EM5+18.0 | Grammar · Day · 6th | Wallington, London | Outstanding 2022-09-28×0.85 |
| 3 | The London Oratory School | 70.9 compositeOfsted10.5 AAB%3.6 VA7.1 Att88.6 EM5+9.6 RWM12.4 Read9.6 Maths9.6 | Academy · Day · 6th | London, London | Outstanding 2022-09-13×0.85 |
| 4 | Tiffin School | 67.8 compositeOfsted11.5 AAB%12.0 VA10.8 Att815.8 EM5+17.7 | Grammar · Day · 6th | Kingston upon Thames, London | Good 2022-05-24×0.85 |
| 5 | St Olave's and St Saviour's Grammar School | 67.4 compositeAAB%16.3 VA11.1 Att819.3 EM5+20.8 | Grammar · Day · 6th | Orpington, London | — 2024-11-05 |
| 6 | Sutton Grammar School | 66.9 compositeOfsted11.5 AAB%11.1 VA10.4 Att816.1 EM5+17.9 | Grammar · Day · 6th | Sutton, London | Good 2022-06-22×0.85 |
| 7 | Wallington County Grammar School | 62.3 compositeAAB%11.5 VA12.2 Att817.9 EM5+20.6 | Grammar · Day · 6th | Wallington, London | — 2022-11-16 |
| 8 | Ilford County High School | 60.4 compositeOfsted11.5 AAB%6.4 VA9.9 Att815.1 EM5+17.5 | Grammar · Day · 6th | Ilford, London | Good 2021-09-21×0.85 |
| 9 | Gunnersbury Catholic School | 58.9 compositeOfsted15.3 AAB%4.4 VA11.9 Att812.7 EM5+14.5 | State · Day · 6th | Brentford, London | Outstanding 2023-01-17×0.85 |
| 10 | The Cardinal Vaughan Memorial RC School | 58.2 compositeOfsted15.3 AAB%5.6 VA9.4 Att813.4 EM5+14.4 | Academy · Day · 6th | London, London | Outstanding 2021-11-16×0.85 |
| 11 | Hasmonean High School for Boys | 54.9 compositeOfsted13.5 AAB%6.1 VA10.7 Att811.3 EM5+13.3 | Academy · Day · 6th | London, London | Good 2023-11-07 |
| 12 | Beths Grammar School | 54.5 compositeOfsted11.5 AAB%2.6 VA8.5 Att814.3 EM5+17.6 | Grammar · Day · 6th | Bexley, London | Good 2022-05-04×0.85 |
| 13 | Harris Boys' Academy East Dulwich | 53.9 compositeOfsted18.0 AAB%3.8 VA11.1 Att811.1 EM5+9.9 | Academy · Day · 6th | London, London | Outstanding 2023-11-28 |
| 14 | Richard Challoner School | 52.4 compositeOfsted15.3 AAB%2.6 VA9.1 Att811.9 EM5+13.4 | Academy · Day · 6th | New Malden, London | Outstanding 2022-11-22×0.85 |
| 15 | The Fulham Boys School | 49.3 compositeOfsted11.5 AAB%1.9 VA11.0 Att812.3 EM5+12.6 | Free School · Day · 6th | London, London | Good 2022-10-11×0.85 |
| 16 | The St Thomas the Apostle College | 48.1 compositeAAB%6.2 VA12.7 Att814.2 EM5+14.9 | State · Day · 6th | London, London | — 2024-11-06 |
| 17 | St Bonaventure's RC School | 47.7 compositeOfsted15.3 AAB%2.2 VA12.3 Att89.5 EM5+8.4 | State · Day · 6th | London, London | Outstanding 2022-11-29×0.85 |
| 18 | Rutlish School | 46.4 compositeAAB%6.2 VA12.3 Att813.9 EM5+14.0 | State · Day · 6th | London, London | — 2024-09-24 |
| 19 | Forest Hill School | 46.2 compositeOfsted13.5 AAB%1.6 VA10.1 Att810.5 EM5+10.6 | State · Day · 6th | London, London | Good 2023-12-13 |
| 20 | Coombe Boys' School | 45.8 composite | Academy · Day · 6th | New Malden, London | — 2023-09-13 |
| 21 | Wimbledon College | 45.5 compositeAAB%5.5 VA12.6 Att813.1 EM5+14.2 | State · Day · 6th | London, London | — 2023-03-22 |
| 22 | Finchley Catholic High School | 45.2 compositeAAB%2.7 VA11.8 Att814.4 EM5+16.3 | State · Day · 6th | London, London | — 2023-09-27 |
| 23 | Central Foundation Boys' School | 44.1 compositeAAB%2.8 VA14.3 Att812.7 EM5+14.3 | State · Day · 6th | London, London | — 2025-03-11 |
| 24 | Carshalton Boys Sports College | 43.7 compositeOfsted11.5 AAB%4.8 VA10.6 Att89.0 EM5+7.8 | Academy · Day · 6th | Carshalton, London | Good 2022-10-18×0.85 |
| 25 | Bullers Wood School for Boys | 43.2 compositeOfsted15.7 Att813.4 EM5+14.1 | Free School · Day | Bromley, London | Good 2023-02-07×0.85 |