| ACS Cobham International School | 125421 | 000431 | | | ✓ | | KT11 1BL | Cobham, Surrey |
| ACS Egham International School | 131173 | 001211 | ✓ | ✓ | ✓ | ✓ | TW20 0HS | Egham, Surrey |
| ACS Hillingdon International School | 102458 | 000152 | | | ✓ | ✓ | UB10 0BE | Uxbridge, Middlesex |
| Anglo European School | 137727 | 000078 | | | ✓ | ✓ | CM4 0DJ | Ingatestone, Essex |
| Ardingly College | 126133 | 001289 | | | ✓ | | RH17 6SQ | Haywards Heath, West Sussex |
| Arts University Plymouth | 130650 | 060847 | | | | ✓ | PL4 8AT | Plymouth, Devon |
| Ashcroft Technology Academy | 135316 | 006145 | | | ✓ | | SW15 2UT | London |
| Atelier 21 Future School | 147911 | 062666 | | ✓ | | | RH11 9RZ | Crawley, West Sussex |
| Bedford Girls' School | 109727 | 001341 | ✓ | | ✓ | | MK42 0BX | Bedford, Bedfordshire |
| Bedford School | 109718 | 001414 | | | ✓ | | MK40 2TU | Bedford, Bedfordshire |
| Bexley Grammar School | 136369 | 002098 | | | ✓ | | DA16 2BL | Welling, Kent |
| Bradfield College | 110121 | 007028 | | | ✓ | | RG7 6AU | Bradfield, Berkshire |
| Brentwood School | 115429 | 003054 | | | ✓ | | CM15 8EE | Brentwood, Essex |
| Bristol Grammar School | 109369 | 060106 | | | ✓ | | BS8 1SR | Bristol |
| Bromsgrove School | 117012 | 004397 | | | ✓ | | B61 7DU | Bromsgrove, Worcestershire |
| Bryanston School | 113910 | 006656 | | | ✓ | | DT11 0PX | Blandford Forum, Dorset |
| Buckswood School | 114656 | 007062 | | | ✓ | | TN35 4LT | East Sussex |
| Charterhouse | 125340 | 004404 | | | ✓ | | GU7 2DX | Godalming, Surrey |
| Cheltenham Ladies' College | 115798 | 003684 | | | ✓ | | GL50 3EP | Cheltenham, Gloucestershire |
| Chester International School | 144742 | 051995 | | ✓ | ✓ | ✓ | CH4 7AE | Chester, Cheshire |
| Dane Court Grammar School | 136585 | 003664 | | | ✓ | ✓ | CT10 2RT | Broadstairs, Kent |
| Dartford Grammar School | 136359 | 000866 | | ✓ | ✓ | | DA1 2HW | Dartford, Kent |
| Deutsche Schule London | 102945 | 004439 | | | ✓ | | TW10 7AH | Richmond, Surrey |
| Dwight School London | 101391 | 000865 | ✓ | ✓ | ✓ | | N11 3LX | London |
| Ebbsfleet Academy | 137581 | 060077 | | ✓ | | ✓ | DA10 0BZ | Swanscombe, Kent |
| Ecole Jeannine Manuel UK | 142408 | 060504 | | | ✓ | | WC1B 3DN | London |
| EF Academy | | 004900 | | | ✓ | | | |
| Ellesmere College | 123600 | 002852 | | | ✓ | | SY12 9AB | Ellesmere, Shropshire |
| Europa School UK | 138269 | 061145 | | ✓ | ✓ | | OX14 3DZ | Abingdon, Oxfordshire |
| Exeter College | 130645 | 000695 | | | ✓ | | EX4 4JS | Exeter, Devon |
| Fairview International school | | 061538 | ✓ | ✓ | ✓ | | FK9 4RR | Stirling, Scotland |
| Felsted School | 115395 | 002679 | | | ✓ | | CM6 3LL | Felsted, Essex |
| Fettes College | | 002569 | | | ✓ | | EH4 1QX | Edinburgh, Scotland |
| Gresham's School | 121222 | 003433 | | | ✓ | | NR25 6EA | |
| Haileybury | 117607 | 001122 | | | ✓ | | SG13 7NU | Hertford, Hertfordshire |
| Halcyon London International School | 139415 | 050209 | | ✓ | ✓ | | W1H 5AU | London |
| Hartley Primary Academy | 139615 | 061540 | ✓ | | | | DA3 8BT | Longfield, Kent |
| Hartsdown Academy | 136571 | 060072 | | | | ✓ | CT9 5RE | Margate, Kent |
| Hockerill Anglo-European College | 136482 | 000815 | | ✓ | ✓ | | CM23 5HX | Bishop's Stortford, Hertfordshire |
| ICS London | 101171 | 002283 | ✓ | ✓ | ✓ | | W1H 1PN | London |
| Impington Village College | 137826 | 000579 | | ✓ | ✓ | ✓ | CB24 9LX | Cambridge, Cambridgeshire |
| International School of London | 102550 | 000057 | ✓ | ✓ | ✓ | | W3 8LG | London |
| Kent College Canterbury | 119001 | 004936 | | | ✓ | | CT2 9DT | Canterbury, Kent |
| King Edward's School, Birmingham | 103584 | 004359 | | | ✓ | | B15 2UA | Birmingham, West Midlands |
| King Ethelbert School | 136584 | 052097 | | | | ✓ | CT7 9BL | Birchington, Kent |
| King's College School Wimbledon | 102684 | 001262 | | | ✓ | | SW19 4TT | London |
| Kings InterHigh | | 063403 | | | ✓ | | | |
| Knole Academy | 136128 | 060851 | | | ✓ | ✓ | TN13 3LE | Sevenoaks, Kent |
| Landmark International School | 142776 | 062293 | ✓ | | | | CB21 5EP | Cambridge, Cambridgeshire |
| Leigh Academy Bearsted | 147866 | 061971 | ✓ | | | | ME14 5GA | Maidstone, Kent |
| Leigh Academy Blackheath | 145895 | 061004 | | ✓ | ✓ | ✓ | SE3 8SY | London |
| Leigh Academy Cherry Orchard | 142517 | 061539 | ✓ | | | | DA10 1AD | Ebbsfleet, Kent |
| Leigh Academy Dartford | 141534 | 061541 | ✓ | | | | DA1 1SQ | Dartford, Kent |
| Leigh Academy Halley | 145315 | 060861 | | ✓ | | ✓ | SE3 8EP | London |
| Leigh Academy High Halstow | 137990 | 061545 | ✓ | | | | ME3 8TF | Rochester, Kent |
| Leigh Academy Horsmonden | 147280 | 061973 | ✓ | | | | TN12 8NJ | Tonbridge, Kent |
| Leigh Academy Milestone | 137883 | 061974 | ✓ | | | | DA3 8JZ | Longfield, Kent |
| Leigh Academy Minster | 150935 | 063985 | | | | ✓ | ME12 3JQ | Sheerness |
| Leigh Academy Rainham | 148577 | 062413 | | ✓ | | | ME8 8GS | Gillingham, Kent |
| Leigh Academy Strood | 135964 | 060854 | | ✓ | | ✓ | ME2 2SX | Rochester, Kent |
| Leigh Academy Tonbridge | 136349 | 062760 | | ✓ | | | TN9 2PH | Tonbridge, Kent |
| Leigh Stationers' Academy | 141309 | 060862 | | ✓ | | | SE9 2PT | London |
| Leigh Stationers' Primary Academy | 142586 | 061970 | ✓ | | | | DA16 2ST | Welling, Kent |
| Leighton Park School | 110110 | 004497 | | | ✓ | | RG2 7ED | Reading, Berkshire |
| Liberty Woodland School | 147455 | 062759 | | ✓ | | | SM4 5JD | London |
| Lomond School | | 061888 | | | ✓ | ✓ | G84 9JX | Argyll and Bute, Scotland |
| Longfield Academy | 145577 | 052570 | | ✓ | | | DL3 0HT | Darlington |
| Lycée International de Londres Winston Churchill | 142329 | 060326 | | | ✓ | | HA9 9LY | London |
| Malvern College | 117017 | 000641 | | | ✓ | | WR14 3DF | Malvern, Worcestershire |
| Marden Primary Academy | 140526 | 062608 | ✓ | | | | HR1 3EW | Hereford, Herefordshire |
| Marymount International School London | 102615 | 000128 | | ✓ | ✓ | | KT2 7PE | Kingston upon Thames, Surrey |
| Mascalls Academy | 136847 | 061003 | | ✓ | | | TN12 6LT | Tonbridge, Kent |
| North London Collegiate School | 102257 | 001482 | | | ✓ | | HA8 7RJ | Middlesex |
| Northfleet School for Girls | 118788 | 060009 | | | | ✓ | DA11 8AQ | Gravesend, Kent |
| Northfleet Technology College | 118928 | 052108 | | | | ✓ | DA11 8BG | Gravesend, Kent |
| Oakham School | 120322 | 001264 | | | ✓ | | LE15 6DT | Oakham, Rutland |
| Paddock Wood Primary Academy | 147409 | 061972 | ✓ | | | | TN12 6JE | Tonbridge, Kent |
| Pamoja Education Online Provider | | 006929 | | | ✓ | | | |
| Parkside Community College | 136636 | 004693 | | | ✓ | | CB1 1EH | Cambridge, Cambridgeshire |
| Peninsula East Primary Academy | 141553 | 061559 | ✓ | | | | ME3 9HR | Rochester |
| RGS Surrey Hills | 125388 | 003660 | | | ✓ | | RH5 6EA | Dorking, Surrey |
| Rossall School | 119818 | 001045 | | | ✓ | | FY7 8JW | Fleetwood, Lancashire |
| Royal High School Bath | 109348 | 003635 | | | ✓ | | BA1 5SZ | |
| Rugby School | 125777 | 061492 | | | ✓ | | CV21 3AW | Rugby, Warwickshire |
| Ryde School with Upper Chine | 118223 | 006147 | | | ✓ | ✓ | PO33 3BE | Ryde, Isle of Wight |
| Scarborough College | 121730 | 002743 | | | ✓ | | YO11 3BA | Scarborough, North Yorkshire |
| Sevenoaks School | 118952 | 000102 | | | ✓ | | TN13 1HU | Sevenoaks, Kent |
| Sidcot School | 109362 | 003237 | | | ✓ | | BS25 1PD | Winscombe, Somerset |
| Sir Geoffrey Leigh Academy | 135297 | 060004 | | | | ✓ | DA1 1QE | Dartford, Kent |
| Snowfields Academy | 147870 | 062970 | | ✓ | | | ME14 5GA | Maidstone, Kent |
| Southbank International School - Hampstead Campus | 100090 | 002897 | ✓ | | | | NW3 5TH | London |
| Southbank International School - Kensington Campus | 100542 | 002896 | ✓ | | | | W11 3BU | London |
| Southbank International School - Westminster Campus | 143530 | 000309 | | ✓ | ✓ | | W1B 1QR | |
| St Edwards School Oxford | 123292 | 003639 | | | ✓ | | OX2 7NN | Oxford, Oxfordshire |
| St George's School Windsor Castle | 110131 | 062204 | ✓ | | | | SL4 1QF | |
| St Leonards School | | 002276 | ✓ | ✓ | ✓ | ✓ | KY16 9QJ | Fife, Scotland |
| St. Clare's, Oxford | 133430 | 000041 | | | ✓ | | OX2 7AL | Oxford, Oxfordshire |
| Stonyhurst College | 119817 | 049093 | | | ✓ | | BB7 9PZ | Lancashire |
| TASIS The American School in England | 125423 | 002261 | | | ✓ | | TW20 8TE | Egham, Surrey |
| Taunton School | 123914 | 003299 | | | ✓ | | TA2 6AD | Taunton, Somerset |
| Teikyo School United Kingdom | 110570 | 062081 | | | ✓ | | SL2 4QS | Buckinghamshire |
| The Abbey School | 110165 | 003682 | ✓ | | ✓ | | RG1 5DZ | Reading, Berkshire |
| The Cavendish School | 100066 | 062699 | ✓ | | | | NW1 7HB | London |
| The Chalfonts Independent Grammar School | 142069 | 050850 | | ✓ | ✓ | | HP11 1BJ | Chalfont St Giles, Buckinghamshire |
| The Godolphin and Latymer School | 100369 | 002194 | | | ✓ | | W6 0PG | London |
| The Hundred of Hoo Academy | 137119 | 061547 | ✓ | ✓ | | | ME3 9HH | Rochester, Kent |
| The International School of Aberdeen | | 000893 | | | ✓ | | AB15 9PN | Aberdeen, Scotland |
| The Leigh UTC | 140987 | 060075 | | ✓ | | | DA1 5TF | Dartford, Kent |
| The Malling School | 118897 | 060074 | | | ✓ | ✓ | ME19 6DH | West Malling, Kent |
| The Rochester Grammar School | 136313 | 003553 | | | ✓ | | ME1 3BY | Rochester, Kent |
| The Royal Harbour Academy | 149554 | 052123 | | ✓ | | ✓ | CT12 6RH | Ramsgate, Kent |
| The Skinners' Kent Academy Trust | 135888 | 006519 | | ✓ | | ✓ | TN2 4PY | Tunbridge Wells, Kent |
| Tonbridge Grammar School | 136417 | 002089 | | ✓ | ✓ | | TN9 2JR | Tonbridge, Kent |
| Torquay Boys' Grammar School | 136321 | 004566 | | | ✓ | | TQ2 7EL | Torquay, Devon |
| Truro and Penwith College | 130629 | 001077 | | | ✓ | | TR1 3XX | Truro, Cornwall |
| UWC Atlantic | 402333 | 000017 | | | ✓ | | CF61 1WF | Vale of Glamorgan, Wales |
| Varndean College | 130668 | 003686 | | | ✓ | | BN1 6WQ | Brighton, East Sussex |
| Warminster School | 126522 | 002643 | | | ✓ | ✓ | BA12 8PJ | Warminster, Wiltshire |
| Wellington College | 110125 | 003687 | | | ✓ | | RG45 7PU | |
| West Buckland School | 113606 | 062914 | | | | ✓ | EX32 0SX | Barnstaple |
| Westbourne School | 402002 | 003747 | | | ✓ | | CF64 1YY | Vale of Glamorgan, Wales |
| Westminster Academy | 131262 | 003689 | | | ✓ | ✓ | W2 5EZ | London |
| Whitgift School | 101837 | 002095 | | | ✓ | | CR2 6YT | |
| Wilmington Academy | 136205 | 052564 | | ✓ | | ✓ | DA2 7DR | Wilmington, Kent |
| Windermere School | 112446 | 003061 | | | ✓ | ✓ | LA23 1NW | The Lake District |
| Worth School | 126137 | 001382 | | | ✓ | | RH10 4SD | Crawley, West Sussex |
| Worthgate School | 131411 | 003537 | | | ✓ | | CT1 3LQ | Canterbury, Kent |
| Wotton House International School Gloucestershire | 143018 | 060134 | | ✓ | | | GL1 3PR | Gloucester |