| 1 | Brampton Manor Academy Period 202122 | 54.7 | Academy · Day · 6th | London, London | — |
| 2 | Michaela Community School Period 202324 | 51.9 | Free School · Day · 6th | London, London | — |
| 3 | JFS Period 202223 | 49.2 | State · Day · 6th | Harrow, London | Good |
| 4 | The Latymer School Period 202122 | 49.1 | Grammar · Day · 6th | London, London | Good |
| 5 | Harrow High School Period 202122 | 49.0 | Academy · Day · 6th | Harrow, London | — |
| 6 | The Charter School North Dulwich Period 202122 | 48.5 | Academy · Day · 6th | London, London | Outstanding |
| 7 | Haberdashers' Knights Academy Period 202425 | 48.3 | Academy · Day · 6th | Bromley, London | — |
| 8 | Christ's Church of England Comprehensive Secondary School Period 202223 | 48.1 | State · Day · 6th | Richmond, London | — |
| 9 | JCoSS Period 202122 | 47.7 | State · Day · 6th | New Barnet, London | Good |
| 10 | Mossbourne Community Academy Period 202122 | 47.6 | Academy · Day · 6th | London, London | Outstanding |
| 11 | Paddington Academy Period 202122 | 47.6 | Academy · Day · 6th | London, London | Outstanding |
| 12 | City of London Academy, Highgate Hill Period 202425 | 47.0 | Free School · Day · 6th | London, London | Good |
| 13 | West London Free School Period 202425 | 46.7 | Free School · Day · 6th | London, London | Good |
| 14 | Twyford Church of England High School Period 202122 | 46.1 | Academy · Day · 6th | London, London | Outstanding |
| 15 | The Elms Academy Period 202122 | 46.0 | Academy · Day · 6th | London, London | Good |
| 16 | Ashcroft Technology Academy Period 202122 | 45.9 | Academy · Day · 6th | London, London | Outstanding |
| 17 | Oak Wood School Period 202122 | 45.7 | State · Day · 6th | Uxbridge, London | Good |
| 18 | Chislehurst and Sidcup Grammar School Period 202425 | 45.7 | Grammar · Day · 6th | Sidcup, London | — |
| 19 | Riverside School Period 202425 | 45.0 | Free School · Day · 6th | Barking, London | Outstanding |
| 20 | Glenthorne High School Period 202122 | 44.9 | Academy · Day · 6th | Sutton, London | Good |
| 21 | Grey Court School Period 202122 | 44.8 | Academy · Day · 6th | Richmond, London | — |
| 22 | Alexandra Park School Period 202122 | 44.6 | Academy · Day · 6th | London, London | Outstanding |
| 23 | The Coopers' Company and Coborn School Period 202122 | 44.5 | Academy · Day · 6th | Upminster, London | — |
| 24 | Whitmore High School Period 202122 | 44.5 | State · Day · 6th | Harrow, London | — |
| 25 | The Totteridge Academy Period 202324 | 44.4 | Academy · Day · 6th | London, London | — |