| 1 | Beths Grammar School | Good | Grammar · Day · 6th | Bexley, London | Good |
| 2 | Bexley Grammar School | Outstanding | Grammar · Day · 6th | Welling, London | Outstanding |
| 3 | Centre Academy London | 50 pupils | Grammar · Day · 6th | London, London | — |
| 4 | Chislehurst and Sidcup Grammar School | 1,517 pupils | Grammar · Day · 6th | Sidcup, London | — |
| 5 | Ilford County High School | Good | Grammar · Day · 6th | Ilford, London | Good |
| 6 | Newstead Wood School | Outstanding | Grammar · Day · 6th | Orpington, London | Outstanding |
| 7 | Nonsuch High School for Girls | Good | Grammar · Day · 6th | Sutton, London | Good |
| 8 | Queen Elizabeth's School, Barnet | Outstanding | Grammar · Day · 6th | Barnet, London | Outstanding |
| 9 | St Michael's Catholic Grammar School | Outstanding | Grammar · Day · 6th | London, London | Outstanding |
| 10 | St Olave's and St Saviour's Grammar School | 1,085 pupils | Grammar · Day · 6th | Orpington, London | — |
| 11 | Sutton Grammar School | Good | Grammar · Day · 6th | Sutton, London | Good |
| 12 | The Henrietta Barnett School | Good | Grammar · Day · 6th | London, London | Good |
| 13 | The Latymer School | Good | Grammar · Day · 6th | London, London | Good |
| 14 | The Tiffin Girls' School | Outstanding | Grammar · Day · 6th | Kingston upon Thames, London | Outstanding |
| 15 | Tiffin School | Good | Grammar · Day · 6th | Kingston upon Thames, London | Good |
| 16 | Townley Grammar School | Outstanding | Grammar · Day · 6th | Bexleyheath, London | Outstanding |
| 17 | Wallington County Grammar School | 1,117 pupils | Grammar · Day · 6th | Wallington, London | — |
| 18 | Wallington High School for Girls | 1,547 pupils | Grammar · Day · 6th | Wallington, London | — |
| 19 | Wilson's School | Outstanding | Grammar · Day · 6th | Wallington, London | Outstanding |
| 20 | Woodford County High School | Good | Grammar · Day · 6th | Woodford Green, London | Good |