| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | SARGAS POWER YORKSHIRE LIMITED | — | Dissolved | 09/06/2026 – 06/02/2012 |
| Officer | 2CO CARBON LIMITED | — | Dissolved | 24/05/2026 – 06/02/2012 |
| Officer | 2CO OIL LIMITED | — | Dissolved | 24/05/2026 – 06/02/2012 |
| Officer | NORTH SEA CARBON MANAGEMENT COMPANY LIMITED | — | Dissolved | 05/06/2026 – 04/12/2009 |
| Officer | UKCS CARBON MANAGEMENT COMPANY LIMITED | — | Dissolved | 05/06/2026 – 04/12/2009 |
| Officer | HYDROGEN ENERGY INTERNATIONAL LIMITED | — | Dissolved | 11/06/2026 – 04/12/2009 |
06/02/2012
resigned
06/05/2011
appointed
19/09/2007
appointed