| 326 | Norbury High School for Girls | 1,173 pupils | Academy · Day · 6th | Thornton Heath, London | — |
| 327 | Bishop Justus CofE School | 1,171 pupils | Academy · Day · 6th | Bromley, London | — |
| 328 | The St Marylebone CofE School | 1,170 pupils | Academy · Day · 6th | London, London | — |
| 329 | Chislehurst School for Girls | 1,165 pupils | Academy · Day · 6th | Chislehurst, London | — |
| 330 | Harris City Academy Crystal Palace | 1,162 pupils | Academy · Day · 6th | London, London | — |
| 331 | St Gregory's Catholic Science College | 1,160 pupils | Academy · Day · 6th | Harrow, London | — |
| 332 | The Palmer Catholic Academy | 1,155 pupils | Academy · Day · 6th | Ilford, London | — |
| 333 | St George's Catholic School | 1,153 pupils | Academy · Day · 6th | London, London | — |
| 334 | St Richard Reynolds Catholic High School | 1,140 pupils | Academy · Day · 6th | London, London | — |
| 335 | Pinner High School | 1,135 pupils | Free School · Day · 6th | Pinner, London | — |
| 336 | The John Fisher School | 1,134 pupils | State · Day · 6th | Purley, London | — |
| 337 | Central Foundation Boys' School | 1,133 pupils | State · Day · 6th | London, London | — |
| 338 | Haberdashers' Knights Academy | 1,130 pupils | Academy · Day · 6th | Bromley, London | — |
| 339 | Sacred Heart High School | 1,123 pupils | Academy · Day · 6th | London, London | — |
| 340 | Harris Lowe Academy Willesden | 1,120 pupils | Academy · Day · 6th | London, London | — |
| 341 | Overton Grange School | 1,120 pupils | Academy · Day · 6th | Sutton, London | — |
| 342 | Wallington County Grammar School | 1,117 pupils | Grammar · Day · 6th | Wallington, London | — |
| 343 | Heathcote School & Science College | 1,116 pupils | State · Day · 6th | London, London | — |
| 344 | The St Thomas the Apostle College | 1,111 pupils | State · Day · 6th | London, London | — |
| 345 | Queen Elizabeth's Girls' School | 1,107 pupils | Academy · Day · 6th | Barnet, London | — |
| 346 | Saint Cecilia's Church of England School | 1,106 pupils | Academy · Day · 6th | London, London | — |
| 347 | The Bridge Academy | 1,099 pupils | Academy · Day · 6th | London, London | — |
| 348 | Kelmscott School | 1,097 pupils | State · Day | London, London | — |
| 349 | Harris Girls Academy Bromley | 1,096 pupils | Academy · Day · 6th | Beckenham, London | — |
| 350 | Regent High School | 1,086 pupils | State · Day · 6th | London, London | — |