| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Cargo | BYDAND DRILLING LIMITED | 🇬🇧United Kingdom | Activa | 1/6/2026 – 12/7/2010 |
| Cargo | IAN RITCHIE LIMITED | — | Disuelta | 15/6/2026 – presente |
| Cargo | CLASS INSTRUMENTATION LTD | 🇬🇧United Kingdom | Activa | 1/5/2026 – 28/6/1998 |
12/7/2010
resigned
8/4/2010
appointed
20/9/1996
appointed