| Barnet | Queen Elizabeth’s School |
| St Michael’s Catholic Grammar School |
| The Henrietta Barnet School |
| Bexley | Bexley Grammar School |
| Bexley-Erith Technical High School for Boys |
| Chislehurst and Sidcup Grammar School |
| Townley Grammar School for Girls |
| Birmingham | Bishop Vesey’s Grammar School |
| Handsworth Grammar School |
| King Edward VI Aston School |
| King Edward VI Camp Hill Girls' School |
| King Edward VI Camp Hill School (Boys) |
| King Edward VI Five Ways School |
| King Edward VI Handsworth School |
| Sutton Coldfield Girls' School |
| Bournemouth | Bournemouth School |
| Bournemouth School for Girls (GM) |
| Bristol | Cotham Grammar School |
| Fairfield Grammar School |
| Bromley | Newstead Wood School for Girls (GM) |
| St Olave’s & St Saviour’s Grammar School |
| Buckinghamshire | Aylesbury Grammar School |
| Aylesbury High School |
| Beaconsfield High School |
| Burnham Grammar School |
| Chesham High School |
| Dr Challoner’s Grammar School |
| Dr Challoner’s High School |
| John Hampden Grammar School |
| Royal Grammar School |
| Sir Henry Floyd Grammar School |
| Sir William Borlase’s Grammar School |
| The Royal Latin School |
| Wycombe High School |
| Calderdale | Crossley Heath School |
| The North Halifax Grammar School |
| Cumbria | Queen Elizabeth Grammar School |
| Devon | Colyton Grammar School |
| Enfield | The Latymer School |
| Essex | Chelmsford County High School for Girls |
| Colchester County High School for Girls |
| Colchester Royal Grammar School |
| King Edward VI Grammar School (GM) |
| Gloucestershire | High School for Girls |
| Marling School |
| Pate’s Grammar School |
| Ribston Hall High School |
| Sir Thomas Rich’s School |
| Stroud High School |
| The Crypt School |
| Kent | Barton Court Grammar School |
| Borden Grammar School |
| Chatham House Grammar School for Boys |
| Clarendon House Grammar School |
| Cranbrook School |
| Dane Court Grammar School |
| Dartford Grammar School |
| Dartford Grammar School for Girls |
| Dover Grammar School for Boys |
| Dover Grammar School for Girls |
| Gravesend Grammar School for Boys |
| Gravesend Grammar School for Girls |
| Highsted School |
| Highworth Grammar School for Girls |
| Invicta Grammar School |
| Maidstone Grammar School |
| Maidstone Grammar School for Girls |
| Oakwood Park Grammar School |
| Queen Elizabeth’s Grammar School |
| Simon Langton Girls' School |
| Simon Langton Grammar School for Boys |
| Sir Roger Manwood’s School |
| The Folkestone School for Girls |
| The Grammar School for Girls Wilmington |
| The Harvey Grammar School |
| The Judd School |
| The Norton Knatchbull School |
| The Skinners' School |
| Tonbridge Grammar School for Girls |
| Tunbridge Wells Girls' Grammar School |
| Tunbridge Wells Grammar School for Boys |
| Weald of Kent Grammar School |
| Wilmington Grammar School for Boys |
| Kingston upon Thames | The Tiffin Girls' School |
| Tiffin School |
| Kirklees | Heckmondwike Grammar School |
| Lancashire | Bacup and Rawtenstall Grammar School |
| Clitheroe Royal Grammar School |
| Lancaster Girls' Grammar School |
| Lancaster Royal Grammar School |
| Lincolnshire | Boston Grammar School |
| Boston High School for Girls |
| Bourne Grammar School |
| Caistor Grammar School |
| Carre’s Grammar School |
| Kesteven and Grantham Girls' School |
| Kesteven and Sleaford High School |
| King Edward VI School |
| Queen Elizabeth’s GM Grammar School |
| Queen Elizabeth’s Grammar School–Horncastle |
| Queen Elizabeth’s High School |
| Skegness Grammar School |
| Spalding Queen Elizabeth Royal Free Grammar School |
| Spalding High School |
| The King’s School |
| Liverpool | The Liverpool Blue Coat School |
| Medway Towns | Chatham Boys' Grammar School |
| Chatham Girls' Grammar School |
| Fort Pitt Grammar School |
| Rainham Mark Grammar School |
| Sir Joseph Williamson’s Mathematical School |
| The Rochester Girls' Grammar School |
| North Yorkshire | Ermysted’s Grammar School |
| Ripon Grammar School |
| Skipton Girls' High School |
| Plymouth | Devonport High School for Boys |
| Devonport High School for Girls |
| Plymouth High School for Girls |
| Poole | Parkstone Grammar School (Girls) |
| Poole Grammar School |
| Reading | Kendrick Girls' Grammar School |
| Reading School |
| Redbridge | Ilford County High School |
| Woodford County High School |
| Slough | Herschel Grammar School |
| Langley Grammar School |
| Slough Grammar School |
| St Bernard’s Convent School |
| Southend | Southend High School for Boys |
| Southend High School for Girls |
| Westcliff High School for Boys |
| Westcliff High School for Girls |
| Stoke on Trent | St Joseph’s College |
| Surrey | Nonsuch High School for Girls |
| Sutton | Sutton Grammar School for Boys |
| Wallington County Grammar School |
| Wallington High School for Girls |
| Wilson’s School |
| Torbay | Churston Grammar School |
| Torquay Boys' Grammar School |
| Torquay Grammar School for Girls |
| Trafford | Altrincham Grammar School for Boys |
| Altrincham Grammar School for Girls |
| Loreto Grammar School |
| Sale Grammar School |
| St. Ambrose College |
| Stretford Grammar School |
| Urmston Grammar School |
| Walsall | Queen Mary’s Grammar School |
| Queen Mary’s High School |
| Warwickshire | Alcester Grammar School |
| King Edward VI Grammar School |
| Lawrence Sheriff School |
| Rugby High School for Girls |
| Stratford-upon-Avon Grammar School for Girls |
| Wiltshire | Bishop Wordsworth’s Grammar School |
| South Wilts Grammar School for Girls |
| Wirral | Calday Grange Grammar School |
| St. Anselm’s College |
| Upton Hall Convent School FCJ |
| West Kirby Grammar School for Girls |
| Wirral County Grammar School (Girls) |
| Wirral Grammar School for Boys |
| Wolverhampton | Wolverhampton Girls' High School |
| The Wrekin | Adams' Grammar School |
| Newport Girls' High School |