| Alde Valley Academy | LEISTON Suffolk, IP16 4BG | Map | Website |
| Archbishop Sancroft High School | HARLESTON Norfolk, IP20 9DD | Map | Website |
| Barnardiston Hall Preparatory School | HAVERHILL Suffolk, CB9 7TG | Map | Website |
| Bishop's Stortford College | BISHOP'S STORTFORD Hertfordshire, CM23 2PJ | Map | Website |
| Brentwood School | BRENTWOOD Essex, CM15 8AS | Map | Website |
| Colfe's School | LONDON Kent, SE12 8AW | Map | Website |
| Culford School | BURY ST EDMUNDS Suffolk, IP28 6TX | Map | Website |
| Dame Allan's Schools | NEWCASTLE-UPON-TYNE Northumberland, NE4 9YJ | Map | Website |
| East Bergholt High School | COLCHESTER Essex, CO7 6RJ | Map | Website |
| Farlingaye High School | WOODBRIDGE Suffolk, IP12 4JX | Map | Website |
| Felixstowe Academy | FELIXSTOWE Suffolk, IP11 9QR | Map | Website |
| Felsted Preparatory School | NR DUNMOW Essex, CM6 3JL | Map | Website |
| Felsted School | DUNMOW Essex, CM6 3LL | Map | Website |
| Finborough School | STOWMARKET Suffolk, IP14 3EF | Map | Website |
| Framlingham College | WOODBRIDGE Suffolk, IP13 9EY | Map | Website |
| Gosfield School | HALSTEAD Essex, CO9 1PF | Map | Website |
| Gresham's Preparatory School | HOLT Norfolk, NR25 6EY | Map | Website |
| Gresham's School | HOLT Norfolk, NR25 6EA | Map | Website |
| Heath Mount School | HERTFORD Hertfordshire, SG14 3NG | Map | Website |
| Holmwood House Preparatory School | COLCHESTER Essex, CO3 9ST | Map | Website |
| Ibstock Place School | LONDON Surrey, SW15 5PY | Map | Website |
| Ipswich High School | IPSWICH Suffolk, IP9 1AZ | Map | Website |
| Ipswich Preparatory School | IPSWICH Suffolk, IP1 3QW | Map | Website |
| Ipswich School | IPSWICH Suffolk, IP1 3SG | Map | Website |
| King's Ely | ELY Cambridgeshire, CB7 4DB | Map | Website |
| Kyson Primary School | Woodbridge Suffolk, IP12 4HX | tbc | tbc |
| Langley School | NORWICH Norfolk, NR14 6BJ | Map | Website |
| Littlegarth School | COLCHESTER Essex, CO6 4JR | Map | Website |
| Marylebone Cricket Club (MCC) | LONDON Greater London, NW8 8QN | Map | Website |
| New Hall School | CHELMSFORD Essex, CM3 3HS | Map | Website |
| Northgate High School, Ipswich | IPSWICH Suffolk, IP4 3DL | Map | Website |
| Norwich High School for Girls | NORWICH Norfolk, NR2 2HU | Map | Website |
| Norwich School | NORWICH Norfolk, NR1 4DD | Map | Website |
| Nottingham High School | NOTTINGHAM Nottinghamshire, NG7 4ED | Map | Website |
| Old Buckenham Hall School | IPSWICH Suffolk, IP7 7PH | Map | Website |
| Orwell Park School | IPSWICH Suffolk, IP10 0ER | Map | Website |
| RGS, Colchester | COLCHESTER Essex, CO3 3ND | Map | Website |
| Royal Hospital School | IPSWICH Suffolk, IP9 2RX | Map | Website |
| Saint Felix School | SOUTHWOLD Suffolk, IP18 6SD | Map | Website |
| St Dunstan's College | LONDON Kent, SE6 4TY | Map | Website |
| St Joseph's College | LONDON Greater London, SE19 3HL | Map | Website |
| St Joseph's College, Ipswich | IPSWICH Suffolk, IP2 9DR | Map | Website |
| St Teresa's Effingham | EFFINGHAM Surrey, RH5 6ST | Map | Website |
| Stephen Perse Foundation | CAMBRIDGE Cambridgeshire, CB2 1HF | Map | Website |
| The Forty Club | RAMSGATE Kent, CT12 4AJ | tbc | Website |
| Woldingham School | WOLDINGHAM Surrey, CR3 7YA | Map | Website |
| Wymondham College | WYMONDHAM Norfolk, NR18 9SZ | Map | Website |
| Yarm School | STOCKTON-ON-TEES Co. Durham, TS15 9EJ | Map | Website |
