| Aldwickbury School | HARPENDEN Hertfordshire, AL5 1AD | Map | Website |
| Aylesbury Grammar School | AYLESBURY Buckinghamshire, HP21 7RP | Map | Website |
| Beaumont School | ST ALBANS Hertfordshire, AL4 0XB | Map | Website |
| Bedford Modern School | BEDFORD Bedfordshire, MK41 7NT | Map | Website |
| Berkhamsted School | BERKHAMSTED Hertfordshire, HP4 2BB | Map | Website |
| Bernards Heath Junior School | St Albans Hertfordshire, AL3 5HP | tbc | tbc |
| Bishop's Stortford High School | BISHOP'S STORTFORD Hertfordshire, CM23 3LU | Map | Website |
| Cunningham Hill Junior School | St Albans Hertfordshire, AL1 5QJ | tbc | tbc |
| Dame Alice Owens School | POTTERS BAR Hertfordshire, EN6 2DU | Map | Website |
| Dr Challoner's Grammar School | AMERSHAM Buckinghamshire, HP6 5HA | Map | Website |
| Forest School | LONDON Greater London, E17 3PY | Map | Website |
| Freman College | BUNTINGFORD Hertfordshire, SG9 9BT | Map | Website |
| Gordon's School | WOKING Surrey, GU24 9PT | Map | Website |
| Great Baddow High School | CHELMSFORD Essex, CM2 9RZ | Map | Website |
| Heath Mount School | HERTFORD Hertfordshire, SG14 3NG | Map | Website |
| Hemel Hempstead School | HEMEL HEMPSTEAD Hertfordshire, HP1 1TX | Map | Website |
| John Ferneley College | MELTON MOWBRAY Leicestershire, LE13 1LH | Map | Website |
| John Masefield High School | LEDBURY Herefordshire, HR8 2HF | Map | Website |
| King Edward VI Grammar School, Chelmsford | CHELMSFORD Essex, CM1 3SX | Map | Website |
| Latymer Upper School | LONDON Greater London, W6 9LR | Map | Website |
| Lincroft School | BEDFORD Bedfordshire, MK43 7RE | Map | Website |
| Lochinver House School | POTTERS BAR Hertfordshire, EN6 1LW | Map | Website |
| Lockers Park School | HEMEL HEMPSTEAD Hertfordshire, HP1 1TL | Map | Website |
| Longdean School | HEMEL HEMPSTEAD Hertfordshire, HP3 8JB | Map | Website |
| Manor Lodge School | SHENLEY Hertfordshire, WD7 9BG | Map | Website |
| Merchant Taylors' School, Northwood | NORTHWOOD Middlesex, HA6 2HT | Map | Website |
| Mill Hill & Belmont Schools | LONDON Middlesex, NW7 1QS | Map | Website |
| Monks Walk School | WELWYN GARDEN CITY Hertfordshire, AL8 7NL | Map | Website |
| New Hall School | CHELMSFORD Essex, CM3 3HS | Map | Website |
| Nicholas Breakspear Catholic School | ST ALBANS Hertfordshire, AL4 0TT | Map | Website |
| Northampton School for Boys | NORTHAMPTON Northamptonshire, NN1 5RT | Map | Website |
| Onslow St Audrey's School | HATFIELD Hertfordshire, AL10 8AB | Map | Website |
| Parmiter's School | WATFORD Hertfordshire, WD25 0UU | Map | Website |
| Prae Wood Primary School | St Albans Hertfordshire, AL3 4HZ | tbc | tbc |
| Queen Elizabeth's School, Barnet | BARNET Hertfordshire, EN5 4DQ | Map | Website |
| Queens School | WATFORD Hertfordshire, WD23 2TY | Map | Website |
| Richard Hale School | HERTFORD Hertfordshire, SG13 8EN | Map | Website |
| Roundwood Park School | HARPENDEN Hertfordshire, AL5 3AE | Map | Website |
| Samuel Ryder Academy | ST ALBANS Hertfordshire, AL1 5AR | Map | Website |
| Samuel Whitbread Academy | SHEFFORD Bedfordshire, SG17 5QS | Map | Website |
| Sandringham School | ST ALBANS Hertfordshire, AL4 9NX | Map | Website |
| Shoeburyness High School | SHOEBURYNESS Essex, SS3 9LL | Map | Website |
| Shrewsbury School | SHREWSBURY Shropshire, SY3 7BA | Map | Website |
| Sir Frederic Osborn School | WELWYN GARDEN CITY Hertfordshire, AL7 2AF | Map | Website |
| St Albans School | ST ALBANS Hertfordshire, AL3 4HB | Map | Website |
| St George's School, Harpenden | HARPENDEN Hertfordshire, AL5 4TD | Map | Website |
| St John's Beaumont School | OLD WINDSOR Berkshire, SL4 2JN | Map | Website |
| St Martin's School, Northwood | NORTHWOOD Middlesex, HA6 2DJ | Map | Website |
| TASIS The American School in England | THORPE Surrey, TW20 8TE | Map | Website |
| The Haberdashers' Aske's Boys' School | ELSTREE Hertfordshire, WD6 3AF | Map | Website |
| The John Lyon School | HARROW Middlesex, HA2 0HN | Map | Website |
| The Perse School | CAMBRIDGE Cambridgeshire, CB2 8QF | Map | Website |
| Tring School | TRING Hertfordshire, HP23 5JD | Map | Website |
| Watford Grammar School for Boys | WATFORD Hertfordshire, WD18 7JF | Map | Website |
| Wellingborough School | WELLINGBOROUGH Northamptonshire, NN8 2BX | Map | Website |
| Westbrook Hay Preparatory School | HEMEL HEMPSTEAD Hertfordshire, HP1 2RF | Map | Website |
| Westcliff High School For Boys | WESTCLIFF-ON-SEA Essex, SS0 0BP | Map | Website |
| Wetherby Senior School | LONDON Greater London, W1U 2QB | Map | Website |
| Wheatfields Junior Mixed School | St Albans Hertfordshire, AL4 9NT | tbc | tbc |
| Wimbledon College | WIMBLEDON Surrey, SW19 4NS | Map | Website |
| York House School | RICKMANSWORTH Hertfordshire, WD3 4LW | Map | Website |
