| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Cargo | IKON SCIENCE LIMITED | 🇬🇧United Kingdom | Activa | 12/4/2026 – 23/5/2012 |
| Cargo | IKON SCIENCE LIMITED | 🇬🇧United Kingdom | Activa | 12/4/2026 – 18/8/2016 |
| Cargo | PACIFICA ENERGY LIMITED | 🇬🇧United Kingdom | Activa | 12/6/2026 – 13/8/2008 |
| Cargo | PACIFICA ENERGY LIMITED | 🇬🇧United Kingdom | Activa | 12/6/2026 – 6/4/2010 |
| Cargo | ENCORE (VOG) LIMITED | — | Disuelta | 14/6/2026 – 14/10/2006 |
| Cargo | BREDISHOLM ENERGY SERVICES LIMITED | 🇬🇧United Kingdom | Disuelta | 12/6/2026 – presente |
| Cargo | BREDISHOLM ENERGY SERVICES LIMITED | 🇬🇧United Kingdom | Disuelta | 12/6/2026 – presente |
| Cargo | NEO NEXT + ENERGY BETA LIMITED | 🇬🇧United Kingdom | Activa | 2/4/2026 – 13/12/2004 |
| Cargo | NEO NEXT + ENERGY ALPHA LIMITED | 🇬🇧United Kingdom | Activa | 2/4/2026 – 22/12/2003 |
| Cargo | PETRO-CANADA ENERGY NORTH SEA LIMITED | 🇬🇧United Kingdom | Disuelta | 14/1/2026 – 23/10/1997 |
| Cargo | PETRO-CANADA ENERGY NORTH SEA LIMITED | 🇬🇧United Kingdom | Disuelta | 14/1/2026 – 18/6/2004 |
18/8/2016
resigned
23/5/2012
resigned
17/3/1997
appointed