| 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 Tiffin Girls' School | 71.5 compositeOfsted15.3 AAB%12.1 VA9.2 Att817.1 EM5+17.9 | Grammar · Day · 6th | Kingston upon Thames, London | Outstanding 2021-10-13×0.85 |
| 4 | 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 |
| 5 | The Henrietta Barnett School | 68.9 compositeOfsted11.5 AAB%12.7 VA9.3 Att817.5 EM5+18.0 | Grammar · Day · 6th | London, London | Good 2022-05-04×0.85 |
| 6 | St Michael's Catholic Grammar School | 68.5 compositeOfsted15.3 AAB%9.4 VA11.0 Att815.6 EM5+17.3 | Grammar · Day · 6th | London, London | Outstanding 2022-11-09×0.85 |
| 7 | 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 |
| 8 | 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 |
| 9 | 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 |
| 10 | Newstead Wood School | 66.3 compositeOfsted15.3 AAB%6.8 VA9.6 Att816.6 EM5+18.0 | Grammar · Day · 6th | Orpington, London | Outstanding 2022-02-02×0.85 |
| 11 | Nonsuch High School for Girls | 65.8 compositeOfsted11.5 AAB%10.6 VA9.9 Att816.1 EM5+17.8 | Grammar · Day · 6th | Sutton, London | Good 2021-05-25×0.85 |
| 12 | The Latymer School | 65.8 compositeOfsted11.5 AAB%11.4 VA9.1 Att816.0 EM5+17.8 | Grammar · Day · 6th | London, London | Good 2022-03-24×0.85 |
| 13 | Bexley Grammar School | 65.3 compositeOfsted17.6 VA10.0 Att817.2 EM5+20.4 | Grammar · Day · 6th | Welling, London | Outstanding 2022-10-18×0.85 |
| 14 | JFS | 63.5 compositeOfsted11.5 AAB%6.9 VA18.0 Att812.9 EM5+14.2 | State · Day · 6th | Harrow, London | Good 2022-04-04×0.85 |
| 15 | Twyford Church of England High School | 62.5 compositeOfsted18.0 AAB%6.8 VA9.5 Att813.4 EM5+14.8 | Academy · Day · 6th | London, London | Outstanding 2023-10-17 |
| 16 | Wallington County Grammar School | 62.3 compositeAAB%11.5 VA12.2 Att817.9 EM5+20.6 | Grammar · Day · 6th | Wallington, London | — 2022-11-16 |
| 17 | Michaela Community School | 62.1 compositeAAB%11.2 VA12.8 Att817.9 EM5+20.2 | Free School · Day · 6th | London, London | — 2023-05-11 |
| 18 | Ark Greenwich Free School | 61.9 compositeOfsted21.0 Att818.7 EM5+22.2 | Free School · Day | London, London | Outstanding 2023-04-25×0.85 |
| 19 | Woodford County High School | 61.4 compositeOfsted11.5 AAB%6.7 VA9.4 Att816.0 EM5+17.8 | Grammar · Day · 6th | Woodford Green, London | Good 2022-11-22×0.85 |
| 20 | West London Free School | 61.2 compositeOfsted11.5 AAB%7.7 VA12.9 Att813.8 EM5+15.3 | Free School · Day · 6th | London, London | Good 2022-06-21×0.85 |
| 21 | Lady Margaret School | 61.0 compositeOfsted18.0 AAB%4.8 VA10.2 Att813.3 EM5+14.7 | Academy · Day · 6th | London, London | Outstanding 2023-11-22 |
| 22 | The Charter School North Dulwich | 60.8 compositeOfsted15.3 AAB%6.6 VA11.8 Att813.0 EM5+14.1 | Academy · Day · 6th | London, London | Outstanding 2022-06-07×0.85 |
| 23 | Townley Grammar School | 60.6 compositeOfsted15.3 AAB%3.9 VA9.0 Att815.0 EM5+17.4 | Grammar · Day · 6th | Bexleyheath, London | Outstanding 2023-02-28×0.85 |
| 24 | Ashcroft Technology Academy | 60.5 compositeOfsted15.3 AAB%5.8 VA10.8 Att813.3 EM5+15.2 | Academy · Day · 6th | London, London | Outstanding 2021-09-21×0.85 |
| 25 | 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 |