| Alleyn's School | DULWICH London, SE22 8SU | Map | Website |
| Arnold House School | LONDON Middlesex, NW8 0LH | Map | Website |
| Bancroft's School | WOODFORD GREEN Essex, IG8 0RF | Map | Website |
| Bedford Modern School | BEDFORD Bedfordshire, MK41 7NT | Map | Website |
| Berkhamsted School | BERKHAMSTED Hertfordshire, HP4 2BB | Map | Website |
| Bishop's Stortford College | BISHOP'S STORTFORD Hertfordshire, CM23 2PJ | Map | Website |
| Brentwood School | BRENTWOOD Essex, CM15 8AS | Map | Website |
| Chigwell School | CHIGWELL Essex, IG7 6QF | Map | Website |
| Dame Alice Owens School | POTTERS BAR Hertfordshire, EN6 2DU | Map | Website |
| Edge Grove | ALDENHAM VILLAGE Hertfordshire, WD25 8NL | Map | Website |
| Fair Field Junior School | Radlett Hertfordshire, WD7 8LU | tbc | tbc |
| Forest School | LONDON Greater London, E17 3PY | Map | Website |
| Haberdashers' Aske's School for Girls | ELSTREE Hertfordshire, WD6 3BT | Map | Website |
| Haileybury | HERTFORD Hertfordshire, SG13 7NU | Map | Website |
| Hampton School | HAMPTON Middlesex, TW12 3HD | Map | Website |
| Harrow School | HARROW-ON-THE-HILL Middlesex, HA1 3HP | Map | Website |
| Heath Mount School | HERTFORD Hertfordshire, SG14 3NG | Map | Website |
| Ibstock Place School | LONDON Surrey, SW15 5PY | Map | Website |
| Kimbolton School | HUNTINGDON Cambridgeshire, PE28 0EA | Map | Website |
| Lancing College | LANCING Sussex, BN15 0RW | Map | Website |
| Latymer Upper School | LONDON Greater London, W6 9LR | Map | Website |
| Lockers Park School | HEMEL HEMPSTEAD Hertfordshire, HP1 1TL | Map | Website |
| Merchant Taylors' School, Northwood | NORTHWOOD Middlesex, HA6 2HT | Map | Website |
| Mill Hill & Belmont Schools | LONDON Middlesex, NW7 1QS | Map | Website |
| Orley Farm School | HARROW-ON-THE-HILL Middlesex, HA1 3NU | Map | Website |
| Quainton Hall Preparatory | HARROW Middlesex, HA1 1RX | Map | Website |
| Queen Elizabeth's School, Barnet | BARNET Hertfordshire, EN5 4DQ | Map | Website |
| Queenswood School | HATFIELD Hertfordshire, AL9 6NS | Map | Website |
| RGS, High Wycombe | HIGH WYCOMBE Buckinghamshire, HP13 6QT | Map | Website |
| Richard Hale School | HERTFORD Hertfordshire, SG13 8EN | Map | Website |
| St Albans School | ST ALBANS Hertfordshire, AL3 4HB | Map | Website |
| St Anthony's School for Boys | LONDON Middlesex, NW3 6NP | Map | Website |
| St Benedict's School | LONDON Middlesex, W5 2ES | Map | Website |
| St Columba's College | ST ALBANS Hertfordshire, AL3 4AW | Map | Website |
| St John's School, Northwood | NORTHWOOD Middlesex, HA6 3QY | Map | Website |
| The Haberdashers' Aske's Boys' School | ELSTREE Hertfordshire, WD6 3AF | Map | Website |
| The John Lyon School | HARROW Middlesex, HA2 0HN | Map | Website |
| University College School (UCS) | LONDON Middlesex, NW3 6XH | Map | Website |
| Verulam School | ST ALBANS Hertfordshire, AL1 4PR | Map | Website |
| Watford Grammar School for Boys | WATFORD Hertfordshire, WD18 7JF | Map | Website |
| Westminster School | LONDON Middlesex, SW1P 3PF | Map | Website |
| Winchester College | WINCHESTER Hampshire, SO23 9NA | Map | Website |
