| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Cargo | JOHN HAMPDEN GRAMMAR SCHOOL | 🇬🇧United Kingdom | Activa | 23/5/2026 – 31/8/2021 |
| Cargo | THE LEARNING ALLIANCE ACADEMY TRUST | 🇬🇧United Kingdom | Disuelta | 22/5/2026 – 26/3/2018 |
| Cargo | THE CHILTERN HILLS ACADEMY | 🇬🇧United Kingdom | Activa | 22/5/2026 – 8/5/2012 |
| Cargo | ROYAL GRAMMAR SCHOOL HIGH WYCOMBE | — | Activa | 24/5/2026 – 31/8/2017 |
| Cargo | ALAN ARMSTRONG EDUCATIONAL SERVICES LIMITED | — | Disuelta | 1/6/2026 – presente |
31/8/2021
resigned
1/8/2019
appointed
2/3/2009
appointed