| 1 | The Perse School | 71.7 compositeOfsted13.5 AAB%13.2 VA10.7 Att816.6 EM5+17.7 | Independent · Day · 6th | Unknown, East of England | — |
| 2 | North Bridge House Senior Canonbury School | 63.5 compositeOfsted18.0 AAB%4.8 VA10.8 Att813.5 EM5+16.5 | Independent · Day · 6th | Unknown, London | — |
| 3 | Crosfields School | 61.7 compositeOfsted18.5 Att819.2 EM5+24.0 | Independent · Day | Reading, South East | — |
| 4 | Red House School | 59.9 compositeOfsted18.5 Att819.1 EM5+22.2 | Independent · Day | Stockton-on-Tees, North East | — |
| 5 | Claremont Fan Court School | 59.3 compositeOfsted13.5 AAB%4.2 VA11.4 Att813.7 EM5+16.5 | Independent · Day · 6th | Unknown, South East | — |
| 6 | New Hall School | 59.1 compositeOfsted13.5 AAB%5.2 VA10.4 Att814.1 EM5+15.9 | Independent · Boarding · 6th | Chelmsford, East of England | — |
| 7 | The Harrodian School | 58.6 compositeOfsted10.1 AAB%5.6 VA10.6 Att815.1 EM5+17.2 | Independent · Day · 6th | London, London | Good |
| 8 | Twycross House School | 58.5 compositeOfsted13.5 AAB%6.5 VA9.9 Att812.9 EM5+15.7 | Independent · Day · 6th | Atherstone, East Midlands | Outstanding |
| 9 | Lewes Old Grammar School | 57.6 compositeOfsted13.5 AAB%5.6 VA12.7 Att812.1 EM5+13.6 | Independent · Day · 6th | Unknown, South East | — |
| 10 | Ipswich School | 57.4 compositeAAB%7.9 VA14.8 Att815.7 EM5+19.0 | Independent · Boarding · 6th | Ipswich, East of England | — |
| 11 | Derby High School | 56.7 compositeOfsted13.5 AAB%5.6 VA9.9 Att812.0 EM5+15.7 | Independent · Day · 6th | Derby, East Midlands | — |
| 12 | OneSchool Global UK Colchester Campus | 56.0 compositeOfsted15.6 VA12.7 Att813.4 EM5+14.4 | Independent · Day · 6th | Colchester, East of England | — |
| 13 | Thomas's College | 55.9 compositeOfsted18.5 Att817.7 EM5+19.7 | Independent · Boarding · 6th | Richmond, London | — |
| 14 | Emmanuel College | 55.2 compositeOfsted13.5 AAB%3.9 VA12.4 Att812.0 EM5+13.4 | Independent · Day · 6th | Gateshead, North East | — 2024-10-15 |
| 15 | Kew House | 54.9 compositeOfsted13.5 AAB%3.0 VA10.1 Att813.4 EM5+14.8 | Independent · Day · 6th | London, London | — |
| 16 | Meoncross School | 54.8 compositeOfsted18.5 Att817.8 EM5+18.5 | Independent · Day | Unknown, South East | — |
| 17 | Quinton House School | 54.5 compositeOfsted18.0 AAB%2.8 VA9.0 Att811.3 EM5+13.3 | Independent · Day · 6th | Unknown, East Midlands | — |
| 18 | North Bridge House Senior School | 54.3 compositeOfsted18.5 Att817.1 EM5+18.7 | Independent · Day · 6th | Unknown, London | — |
| 19 | The Peterborough School | 54.2 compositeOfsted13.5 AAB%4.5 VA10.9 Att812.2 EM5+13.2 | Independent · Day · 6th | Peterborough, East of England | — |
| 20 | Downsend School | 54.1 compositeOfsted18.5 Att816.7 EM5+18.9 | Independent · Day · 6th | Leatherhead, South East | — |
| 21 | The Webber Independent School | 54.1 compositeOfsted18.5 Att816.7 EM5+18.8 | Independent · Day | Unknown, South East | — |
| 22 | Hulme Hall Grammar School | 54.0 compositeOfsted18.5 Att817.0 EM5+18.5 | Independent · Day | Stockport, North West | — |
| 23 | d'Overbroeck's | 54.0 compositeAAB%6.8 VA13.2 Att814.9 EM5+18.9 | Independent · Boarding · 6th | Oxford, South East | — |
| 24 | Ditcham Park School | 53.9 compositeOfsted18.5 Att816.4 EM5+19.0 | Independent · Day | Petersfield, South East | — |
| 25 | Long Close School | 53.9 compositeOfsted18.5 Att816.6 EM5+18.8 | Independent · Day | Slough, South East | — |