| 26 | Bedales School | 768 pupils | Independent · Boarding · 6th | Petersfield, South East | — ISI · Good |
| 27 | Harrow School | 831 pupils | Independent · Boarding · 6th | Harrow-on-the-Hill, London | — ISI · Good |
| 28 | Radley College | 762 pupils | Independent · Boarding · 6th | Unknown, South East | — ISI · Good |
| 29 | Royal Grammar School Guildford | 1,311 pupils | Independent · Day · 6th | Unknown, South East | — |
| 30 | North London Collegiate School | 1,102 pupils | Independent · Day · 6th | Middlesex, London | — ISI · Good |
| 31 | Withington Girls' School | 756 pupils | Independent · Day · 6th | Manchester, North West | — ISI · Good |
| 32 | Surbiton High School | 1,618 pupils | Independent · Day · 6th | Kingston upon Thames, London | — ISI · Excellent |
| 33 | Tudor Hall School | 277 pupils | Independent · Boarding · 6th | Banbury, South East | — ISI · Good |
| 34 | Wellington College | 1,138 pupils | Independent · Boarding · 6th | Unknown, South East | — ISI · Excellent |
| 35 | The Perse School | 1,735 pupils | Independent · Day · 6th | Unknown, East of England | — ISI · Good |
| 36 | Merchant Taylors' School | 959 pupils | Independent · Day · 6th | Northwood, East of England | — ISI · Good |
| 37 | Notting Hill & Ealing High School GDST | 930 pupils | Independent · Day · 6th | Unknown, London | — ISI · Good |
| 38 | Royal Grammar School | 1,330 pupils | Independent · Day · 6th | Newcastle-upon-Tyne, North East | — ISI · Good |
| 39 | Solihull School | 1,564 pupils | Independent · Day · 6th | Solihull, West Midlands | — ISI · Good |
| 40 | Headington Rye Oxford | 1,150 pupils | Independent · Boarding · 6th | Oxford, South East | — |
| 41 | Benenden School | 532 pupils | Independent · Boarding · 6th | Cranbrook, South East | — ISI · Good |
| 42 | Putney High School GDST | 1,067 pupils | Independent · Day · 6th | Unknown, London | — ISI · Excellent |
| 43 | Downe House | 542 pupils | Independent · Boarding · 6th | Thatcham, South East | — ISI · Good |
| 44 | Oundle School | 1,134 pupils | Independent · Boarding · 6th | Northamptonshire, East Midlands | — ISI · Good |
| 45 | City of London School for Girls | 780 pupils | Independent · Day · 6th | London, London | — ISI · Good |
| 46 | Roedean School | 615 pupils | Independent · Boarding · 6th | Brighton, South East | — ISI · Good |
| 47 | Shrewsbury School | 826 pupils | Independent · Boarding · 6th | Shrewsbury, West Midlands | — ISI · Good |
| 48 | Rugby School | 869 pupils | Independent · Boarding · 6th | Rugby, West Midlands | — ISI · Good |
| 49 | Trinity School | 1,049 pupils | Independent · Day · 6th | Unknown, London | — ISI · Good |
| 50 | Abingdon School | 1,266 pupils | Independent · Boarding · 6th | Abingdon, South East | — ISI · Excellent |