| Company | Timeline | Status | |
| Energy Transition Solutions Limited Director • None | 24 Apr 2025←7 Months→Current | Active | |
| PGS Em Limited Director • Senior Lecturer | 3 Sep 2003←3 Years→29 Jun 2007 | Dissolved | |
| Pentland Geophysics Limited Director • Senior Lecturer | 27 Mar 1998←27 Years→Current | Active | |
