| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | IKON SCIENCE LIMITED | 🇬🇧United Kingdom | Active | 12/04/2026 – 23/05/2012 |
| Officer | IKON SCIENCE LIMITED | 🇬🇧United Kingdom | Active | 12/04/2026 – 18/08/2016 |
| Officer | PACIFICA ENERGY LIMITED | 🇬🇧United Kingdom | Active | 12/06/2026 – 13/08/2008 |
| Officer | PACIFICA ENERGY LIMITED | 🇬🇧United Kingdom | Active | 12/06/2026 – 06/04/2010 |
| Officer | ENCORE (VOG) LIMITED | — | Dissolved | 14/06/2026 – 14/10/2006 |
| Officer | BREDISHOLM ENERGY SERVICES LIMITED | 🇬🇧United Kingdom | Dissolved | 12/06/2026 – present |
| Officer | BREDISHOLM ENERGY SERVICES LIMITED | 🇬🇧United Kingdom | Dissolved | 12/06/2026 – present |
| Officer | NEO NEXT + ENERGY BETA LIMITED | 🇬🇧United Kingdom | Active | 02/04/2026 – 13/12/2004 |
| Officer | NEO NEXT + ENERGY ALPHA LIMITED | 🇬🇧United Kingdom | Active | 02/04/2026 – 22/12/2003 |
| Officer | PETRO-CANADA ENERGY NORTH SEA LIMITED | 🇬🇧United Kingdom | Dissolved | 14/01/2026 – 23/10/1997 |
| Officer | PETRO-CANADA ENERGY NORTH SEA LIMITED | 🇬🇧United Kingdom | Dissolved | 14/01/2026 – 18/06/2004 |
18/08/2016
resigned
23/05/2012
resigned
17/03/1997
appointed