| Company | Timeline | Status | |
| Velocys Limited Director • Consultant | 1 Jul 2013←4 Years→6 Feb 2018 | Active | |
Julian West Consultancy Limited Director • Consultant | 18 Jul 2012←8 Years→13 Oct 2020 | Dissolved | |
| Elf Hydrocarbons Limited Director • Economist | 30 Sep 1993←2 Years 6 Months→28 Mar 1996 | Active | |
| Shell Ep Offshore Ventures Limited Director • Economist | 11 Nov 1991←4 Years→25 Mar 1996 | Active | |
| Saxon Oil Limited Director • Economist | 11 Nov 1991←4 Years→25 Mar 1996 | Active | |
| Enterprise Oil Limited Director • Economist | 11 Sep 1991←4 Years→31 Mar 1996 | Active | |
