| 26 | Caterham School | 1,012 pupils | Independent · Boarding · 6th | Caterham, South East | — ISI · Good |
| 27 | Wells Cathedral School | 734 pupils | Independent · Boarding · 6th | Wells, South West | — ISI · Excellent |
| 28 | Kimbolton School | 1,071 pupils | Independent · Boarding · 6th | Huntingdon, East of England | — ISI · Good |
| 29 | Dean Close School | 499 pupils | Independent · Boarding · 6th | Cheltenham, South West | — ISI · Good |
| 30 | New Hall School | 1,335 pupils | Independent · Boarding · 6th | Chelmsford, East of England | — ISI · Good |
| 31 | Lancing College | 612 pupils | Independent · Boarding · 6th | Lancing, South East | — ISI · Good |
| 32 | Woodbridge School | 739 pupils | Independent · Boarding · 6th | Woodbridge, East of England | — ISI · Excellent |
| 33 | Bede's Senior School | 802 pupils | Independent · Boarding · 6th | Hailsham, South East | — ISI · Good |
| 34 | St Christopher School | 496 pupils | Independent · Boarding · 6th | Letchworth Garden City, East of England | — ISI · Good |
| 35 | Canford School | 646 pupils | Independent · Boarding · 6th | Wimborne, South West | — ISI · Good |
| 36 | Bradfield College | 834 pupils | Independent · Boarding · 6th | Bradfield, South East | — ISI · Good |
| 37 | Taunton School | 687 pupils | Independent · Boarding · 6th | Taunton, South West | — ISI · Good |
| 38 | Lord Wandsworth College | 706 pupils | Independent · Boarding · 6th | Hook, South East | — ISI · Good |
| 39 | Cheltenham College | 1,178 pupils | Independent · Boarding · 6th | Cheltenham, South West | — ISI · Excellent |
| 40 | Warminster School | 513 pupils | Independent · Boarding · 6th | Warminster, South West | — ISI · Good |
| 41 | Ipswich School | 1,132 pupils | Independent · Boarding · 6th | Ipswich, East of England | — |
| 42 | Hereford Cathedral School With A Junior School | 571 pupils | Independent · Boarding · 6th | Hereford, West Midlands | — |
| 43 | Wisbech Grammar School | 593 pupils | Independent · Boarding · 6th | Cambridgeshire, East of England | — ISI · Good |
| 44 | Mount Kelly | 583 pupils | Independent · Boarding · 6th | Tavistock, South West | — ISI · Good |
| 45 | Felsted School | 1,002 pupils | Independent · Boarding · 6th | Felsted, East of England | — ISI · Good |
| 46 | Wellington School | 861 pupils | Independent · Boarding · 6th | Wellington, South West | — |
| 47 | Hurstpierpoint College | 1,317 pupils | Independent · Boarding · 6th | Hassocks, South East | — ISI · Good |
| 48 | Plymouth College | 511 pupils | Independent · Boarding · 6th | Unknown, South West | — ISI · Good |
| 49 | Kingswood School | 894 pupils | Independent · Boarding · 6th | Bath, South West | — ISI · Good |
| 50 | Trent College | 1,113 pupils | Independent · Boarding · 6th | Nottingham, East Midlands | — |