| 26 | St Albans School | 887 pupils | Independent · Day · 6th | St Albans, East of England | — ISI · Good |
| 27 | Queen Elizabeth's Hospital | 754 pupils | Independent · Day · 6th | Bristol, South West | — ISI · Good |
| 28 | University College School | 1,305 pupils | Independent · Day · 6th | London, London | — |
| 29 | Queen Elizabeth Grammar School | 755 pupils | Independent · Day · 6th | Wakefield, Yorkshire and the Humber | — ISI · Good |
| 30 | Bolton School Boys' Division | 1,124 pupils | Independent · Day · 6th | Bolton, North West | — ISI · Good |
| 31 | St Columba's College | 830 pupils | Independent · Day · 6th | St Albans, East of England | — |
| 32 | Wetherby Senior School | 457 pupils | Independent · Day · 6th | London, London | — ISI · Good |
| 33 | King Edward's School | 837 pupils | Independent · Day · 6th | Birmingham, West Midlands | — ISI · Good |
| 34 | Salesian College | 566 pupils | Independent · Day · 6th | Farnborough, South East | — ISI · Good |
| 35 | St James Senior Boys' School | 327 pupils | Independent · Day · 6th | Ashford, South East | — ISI · Good |
| 36 | Reading Blue Coat School | 824 pupils | Independent · Day · 6th | Berkshire, South East | — ISI · Good |
| 37 | Birkdale School | 712 pupils | Independent · Day · 6th | Sheffield, Yorkshire and the Humber | — |
| 38 | Derby Grammar School | 161 pupils | Independent · Day · 6th | Unknown, East Midlands | — ISI · Good |
| 39 | Menorah Grammar School | Requires Improvement | Independent · Day · 6th | Edgware, London | Requires Improvement |
| 40 | Newcastle School for Boys | 361 pupils | Independent · Day · 6th | Newcastle-upon-Tyne, North East | — ISI · Good |
| 41 | Merchant Taylors' Schools | 371 pupils | Independent · Day · 6th | Liverpool, North West | — |
| 42 | Halliford School | 494 pupils | Independent · Day · 6th | Shepperton, South East | — ISI · Good |
| 43 | Cranmore | 527 pupils | Independent · Day | Leatherhead, South East | — ISI · Good |
| 44 | Thorpe House School | 281 pupils | Independent · Day · 6th | Gerrards Cross, South East | — ISI · Good |
| 45 | Bruern Abbey School | 222 pupils | Independent · Boarding · 6th | Bicester, South East | — ISI · Good |
| 46 | Slindon College | 112 pupils | Independent · Boarding · 6th | Arundel, South East | — ISI · Good |
| 47 | Baytul Ilm Secondary School | 76 pupils | Independent · Day | Unknown, South East | — ISI · Good |
| 48 | Abrar Academy | 73 pupils | Independent · Boarding · 6th | Preston, North West | — ISI · Unsatisfactory |
| 49 | Brooke House College | 105 pupils | Independent · Boarding · 6th | Market Harborough, East Midlands | — ISI · Good |
| 50 | Madinatul Uloom Al Islamiya School | Requires Improvement | Independent · Boarding · 6th | Worcestershire, West Midlands | Requires Improvement |