| School | HMC Division | Membership | Location | Age Range |
| Withington Girls’ School | North West (UK) | British Isles | Manchester, United Kingdom | 7 - 18 |
| Woldingham School | South East (UK) | British Isles | Caterham, United Kingdom | 11 - 18 |
| Wolverhampton Grammar School | West (UK) | British Isles | Wolverhampton, United Kingdom | 4 - 18 |
| Woodbridge School | East (UK) | British Isles | Woodbridge, United Kingdom | 4 - 18 |
| Woodhouse Grove School | North East (UK) | British Isles | Bradford, United Kingdom | 2 - 18 |
| Worksop College | North East (UK) | British Isles | Worksop, United Kingdom | 3 - 18 |
| Worth School | South East (UK) | British Isles | Crawley, United Kingdom | 11 - 18 |
| Wrekin College | West (UK) | British Isles | Wellington, United Kingdom | 11 - 18 |
| Wycliffe College | West (UK) | British Isles | Stonehouse, United Kingdom | 13 - 18 |
| Wycombe Abbey | South Central (UK) | British Isles | High Wycombe, United Kingdom | 11 - 18 |
| Yarm School | North East (UK) | British Isles | Yarm, United Kingdom | 3 - 18 |
Withington Girls’ School
Age range
7 - 18
Location
Wellington Road, Manchester, Greater Manchester, M14 6BL, United Kingdom
Head’s name
Sarah Haslam
Woldingham School
Age range
11 - 18
Location
Marden Park, Caterham, Surrey, CR3 7YA, United Kingdom
Head’s name
Sue Baillie
Wolverhampton Grammar School
Age range
4 - 18
Location
Compton Road, Wolverhampton, WV3 9RB, United Kingdom
Head’s name
Nic Anderson
Woodbridge School
Age range
4 - 18
Location
Burkitt Road, Woodbridge, Suffolk, IP12 4JH, United Kingdom
Head’s name
Shona Norman
Woodhouse Grove School
Age range
2 - 18
Location
Apperley Bridge, Bradford, West Yorkshire, BD10 0NR, United Kingdom
Head’s name
James Lockwood
Worksop College
Age range
3 - 18
Location
Cuthbert's Avenue, Worksop, Nottinghamshire, S80 3AP, United Kingdom
Head’s name
Charles Bailey
Worth School
Age range
11 - 18
Location
Paddockhurst Road, Crawley, West Sussex, RH10 4SD, United Kingdom
Head’s name
Stuart McPherson
Wrekin College
Age range
11 - 18
Location
Sutherland Road, Wellington, Telford, TF1 3BH, United Kingdom
Head’s name
Simon Platford
Wycliffe College
Age range
13 - 18
Location
Bath Road, Gloucestershire, GL10 2JQ, United Kingdom
Head’s name
Christian San Jose
Wycombe Abbey
Age range
11 - 18
Location
Frances Dove Way, High Wycombe, Buckinghamshire, HP11 1PE, United Kingdom
Head’s name
Jo Duncan
Yarm School
Age range
3 - 18
Location
The Friarage, Yarm, North Yorkshire, TS15 9EJ, United Kingdom
Head’s name
Huw Williams