| 26 | Lancing College | 612 pupils | Independent · Boarding · 6th | Lancing, South East | — ISI · Good |
| 27 | Bede's Senior School | 802 pupils | Independent · Boarding · 6th | Hailsham, South East | — ISI · Good |
| 28 | Bradfield College | 834 pupils | Independent · Boarding · 6th | Bradfield, South East | — ISI · Good |
| 29 | Lord Wandsworth College | 706 pupils | Independent · Boarding · 6th | Hook, South East | — ISI · Good |
| 30 | Hurstpierpoint College | 1,317 pupils | Independent · Boarding · 6th | Hassocks, South East | — ISI · Good |
| 31 | Reed's School | 838 pupils | Independent · Boarding · 6th | Cobham, South East | — ISI · Good |
| 32 | Epsom College | 1,143 pupils | Independent · Boarding · 6th | Epsom, South East | — ISI · Good |
| 33 | Seaford College | 962 pupils | Independent · Boarding · 6th | Unknown, South East | — ISI · Good |
| 34 | Ashford School | 993 pupils | Independent · Boarding · 6th | Ashford, South East | — ISI · Good |
| 35 | Frensham Heights School | 510 pupils | Independent · Boarding · 6th | Farnham, South East | — ISI · Good |
| 36 | Worth School | 655 pupils | Independent · Boarding · 6th | Crawley, South East | — ISI · Good |
| 37 | St Catherine's School | 838 pupils | Independent · Boarding · 6th | Guildford, South East | — |
| 38 | St Mary's School Ascot | 384 pupils | Independent · Boarding · 6th | Ascot, South East | — |
| 39 | Bloxham School | 575 pupils | Independent · Boarding · 6th | Banbury, South East | — ISI · Good |
| 40 | St Edward's School | 813 pupils | Independent · Boarding · 6th | Oxford, South East | — |
| 41 | Pangbourne College | 406 pupils | Independent · Boarding · 6th | Reading, South East | — ISI · Good |
| 42 | Ardingly College | 1,048 pupils | Independent · Boarding · 6th | Haywards Heath, South East | — ISI · Good |
| 43 | Christ's Hospital | 846 pupils | Independent · Boarding · 6th | Horsham, South East | — |
| 44 | Leighton Park School | 565 pupils | Independent · Boarding · 6th | Reading, South East | — ISI · Good |
| 45 | Sutton Valence School | 866 pupils | Independent · Boarding · 6th | Maidstone, South East | — |
| 46 | Cranleigh School | 961 pupils | Independent · Boarding · 6th | Cranleigh, South East | — |
| 47 | Kingham Hill School | 326 pupils | Independent · Boarding · 6th | Chipping Norton, South East | — ISI · Good |
| 48 | Oxford International College | Inadequate | Independent · Boarding · 6th | Unknown, South East | Inadequate |
| 49 | Thornton College | 358 pupils | Independent · Boarding · 6th | Milton Keynes, South East | — ISI · Good |
| 50 | d'Overbroeck's | 692 pupils | Independent · Boarding · 6th | Oxford, South East | — |