| Barclay Academy | STEVENAGE Hertfordshire, SG1 3RB | Map | Website |
| Bedford School | BEDFORD Bedfordshire, MK40 2TU | Map | Website |
| Berkhamsted School | BERKHAMSTED Hertfordshire, HP4 2BB | Map | Website |
| Bishop's Stortford College | BISHOP'S STORTFORD Hertfordshire, CM23 2PJ | Map | Website |
| Bishop's Stortford High School | BISHOP'S STORTFORD Hertfordshire, CM23 3LU | Map | Website |
| Chigwell School | CHIGWELL Essex, IG7 6QF | Map | Website |
| Fearnhill School | LETCHWORTH Hertfordshire, SG6 4BA | Map | Website |
| Haberdashers' Elstree Schools | ELSTREE Hertfordshire, WD6 3AF | Map | Website |
| Haileybury | HERTFORD Hertfordshire, SG13 7NU | Map | Website |
| Highfield School | LETCHWORTH Hertfordshire, SG6 3QA | Map | Website |
| John Henry Newman School | STEVENAGE Hertfordshire, SG1 4AE | Map | Website |
| Kimbolton School | HUNTINGDON Cambridgeshire, PE28 0EA | Map | Website |
| King James Academy Royston | Hertfordshire, SG8 7JH | tbc | Website |
| Knights Templar School | BALDOCK Hertfordshire, SG7 6DZ | Map | Website |
| Merchant Taylors' School, Northwood | NORTHWOOD Middlesex, HA6 2HT | Map | Website |
| Mill Hill & Belmont Schools | LONDON Middlesex, NW7 1QS | Map | Website |
| Parmiter's School | WATFORD Hertfordshire, WD25 0UU | Map | Website |
| Queen Elizabeth's School, Barnet | BARNET Hertfordshire, EN5 4DQ | Map | Website |
| Richard Hale School | HERTFORD Hertfordshire, SG13 8EN | Map | Website |
| Robert Clack School | DAGENHAM Essex, RM8 1JU | Map | Website |
| Samuel Whitbread Academy | SHEFFORD Bedfordshire, SG17 5QS | Map | Website |
| St Albans School | ST ALBANS Hertfordshire, AL3 4HB | Map | Website |
| St Benedict's School | LONDON Middlesex, W5 2ES | Map | Website |
| St Clement Danes School | CHORLEYWOOD Hertfordshire, WD3 6EW | Map | Website |
| St Columba's College | ST ALBANS Hertfordshire, AL3 4AW | Map | Website |
| St Edmund's College, Ware | WARE Hertfordshire, SG11 1DS | Map | Website |
| St George's School, Harpenden | HARPENDEN Hertfordshire, AL5 4TD | Map | Website |
| The Nobel School | STEVENAGE Hertfordshire, SG2 0HS | Map | Website |
| The Perse School | CAMBRIDGE Cambridgeshire, CB2 8QF | Map | Website |
| The Priory School | HITCHIN Hertfordshire, SG5 2UR | 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 |
