| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Cargo | STERLING ENERGY (INTERNATIONAL) LIMITED | 🇬🇧United Kingdom | Disuelta | 11/6/2026 – 16/8/2013 |
| Cargo | SINOCHEM RESOURCES UK LIMITED | 🇬🇧United Kingdom | Activa | 31/5/2026 – 30/11/2009 |
16/8/2013
resigned
9/11/2010
appointed
12/10/2009
appointed