| Aldenham School | BOREHAMWOOD Hertfordshire, WD6 3AJ | Map | Website |
| Aylesbury Grammar School | AYLESBURY Buckinghamshire, HP21 7RP | Map | Website |
| Batchwood School | St Albans Hertfordshire, AL3 5RP | tbc | tbc |
| Beaumont School | ST ALBANS Hertfordshire, AL4 0XB | Map | Website |
| Berkhamsted School | BERKHAMSTED Hertfordshire, HP4 2BB | Map | Website |
| Cedars Upper School | LEIGHTON BUZZARD Bedfordshire, LU7 2AE | Map | Website |
| Chancellor's School | HATFIELD Hertfordshire, AL9 7BN | Map | Website |
| Coopers' Company & Coborn School | UPMINSTER Essex, RM14 3HS | Map | Website |
| Dame Alice Owens School | POTTERS BAR Hertfordshire, EN6 2DU | Map | Website |
| Desborough College | MAIDENHEAD Berkshire, SL6 2QB | Map | Website |
| Enfield Grammar School | ENFIELD Middlesex, EN2 6LN | Map | Website |
| Forest School | LONDON Greater London, E17 3PY | Map | Website |
| Freman College | BUNTINGFORD Hertfordshire, SG9 9BT | Map | Website |
| Goffs School | WALTHAM CROSS Hertfordshire, EN7 5QW | Map | Website |
| Greenshaw High School | SUTTON Surrey, SM1 3DY | Map | Website |
| Haberdashers' Aske's School for Girls | ELSTREE Hertfordshire, WD6 3BT | Map | Website |
| Hampton School | HAMPTON Middlesex, TW12 3HD | Map | Website |
| Harris Academy Wimbledon | London, SW20 9NS | Map | Website |
| Hayes School | BROMLEY Kent, BR2 7DB | Map | Website |
| Hemel Hempstead School | HEMEL HEMPSTEAD Hertfordshire, HP1 1TX | Map | Website |
| John Henry Newman School | STEVENAGE Hertfordshire, SG1 4AE | Map | Website |
| John Warner School | HODDESDON Hertfordshire, EN11 0QF | Map | Website |
| Knights Templar School | BALDOCK Hertfordshire, SG7 6DZ | Map | Website |
| London Enterprise Academy | LONDON Greater London, E1 1RD | Map | Website |
| Longsands Academy | ST NEOTS Cambridgeshire, PE19 1LQ | Map | Website |
| Loreto College | ST ALBANS Hertfordshire, AL1 3RQ | Map | Website |
| Monks Walk School | WELWYN GARDEN CITY Hertfordshire, AL8 7NL | Map | Website |
| Nicholas Breakspear Catholic School | ST ALBANS Hertfordshire, AL4 0TT | Map | Website |
| Northampton School for Boys | NORTHAMPTON Northamptonshire, NN1 5RT | Map | Website |
| Parmiter's School | WATFORD Hertfordshire, WD25 0UU | Map | Website |
| Presdales School | WARE Hertfordshire, SG12 9NX | Map | Website |
| Queens School | WATFORD Hertfordshire, WD23 2TY | Map | Website |
| Queenswood School | HATFIELD Hertfordshire, AL9 6NS | Map | Website |
| Rokeby School, Newham | LONDON Greater London, E16 4DD | Map | Website |
| Roundwood Park School | HARPENDEN Hertfordshire, AL5 3AE | Map | Website |
| Saffron Walden County High School | SAFFRON WALDEN Essex, CB11 4UH | Map | Website |
| Samuel Ryder Academy | ST ALBANS Hertfordshire, AL1 5AR | Map | Website |
| Samuel Whitbread Academy | SHEFFORD Bedfordshire, SG17 5QS | Map | Website |
| Simon Balle School | HERTFORD Hertfordshire, SG13 8AJ | Map | Website |
| Sir John Lawes School | HARPENDEN Hertfordshire, AL5 4QP | Map | Website |
| Sir William Borlase's Grammar School | MARLOW Buckinghamshire, SL7 2BR | Map | Website |
| St Albans Girls' School | ST ALBANS Hertfordshire, AL3 6DB | Map | Website |
| St Albans High School for Girls | ST ALBANS Hertfordshire, AL1 3SJ | Map | Website |
| St Albans School | ST ALBANS Hertfordshire, AL3 4HB | Map | Website |
| St Aloysius' College | LONDON Middlesex, N6 5LY | Map | Website |
| St Bernard's Catholic Grammar School | SLOUGH Berkshire, SL3 7AF | Map | Website |
| St Bonaventure's School | LONDON Essex, E7 9QD | 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 Edward's College, Liverpool | LIVERPOOL Merseyside, L12 1LF | Map | Website |
| St George's School, Harpenden | HARPENDEN Hertfordshire, AL5 4TD | Map | Website |
| St Helen's School | NORTHWOOD Middlesex, HA6 3AS | Map | Website |
| St James Senior Girls' School | LONDON Greater London, W14 8SH | Map | Website |
| St Michael's Catholic High School | WATFORD Hertfordshire, WD25 0SS | Map | Website |
| Steyning Grammar School | STEYNING Sussex, BN44 3RX | Map | Website |
| Stoke Newington School & Sixth Form | LONDON Middlesex, N16 9EY | Map | Website |
| The Broxbourne School | BROXBOURNE Hertfordshire, EN10 7DD | Map | Website |
| The Bushey Academy | BUSHEY Hertfordshire, WD23 3AA | Map | Website |
| The Haberdashers' Aske's Boys' School | ELSTREE Hertfordshire, WD6 3AF | Map | Website |
| The Marlborough Science Academy | ST ALBANS Hertfordshire, AL1 2QA | Map | Website |
| The Priory School | HITCHIN Hertfordshire, SG5 2UR | Map | Website |
| The Royal Masonic School for Girls | RICKMANSWORTH Hertfordshire, WD3 4HF | Map | Website |
| Townsend CofE School | ST ALBANS Hertfordshire, AL3 6DR | Map | Website |
| Tring School | TRING Hertfordshire, HP23 5JD | Map | Website |
| Vandyke Upper School | LEIGHTON BUZZARD Bedfordshire, LU7 3DY | Map | Website |
| Verulam School | ST ALBANS Hertfordshire, AL1 4PR | Map | Website |
| Watford Grammar School for Boys | WATFORD Hertfordshire, WD18 7JF | Map | Website |
