| Company | Timeline | Status | |
| Birnie Gowkhill Energy Ltd Director • Unreported | 18 Jul 2017←8 Years→Current | Active | |
| Westwinds Energy Ltd Director • Unreported | 15 Dec 2011←13 Years→Current | Active | |
Castlehill Oil Limited Director • Share Fisherman | 22 Dec 2009←7 Years→13 Jun 2017 | Dissolved | |
| Manorcove Limited Director • Unreported | 23 Nov 2005←19 Years→Current | Active | |
| Fishermen's Petroleum Company Limited Director • Fishing Skipper | 3 Jun 2003←19 Years→23 Mar 2023 | Active | |
| Castlehill LLP Designated LLP Member • Unreported | 21 Dec 2001←23 Years→Current | Active | |
| Fishermen's Petroleum Company Limited Director • Fisherman (alternate Director) | 30 Jun 1989←1 Year→20 Jul 1990 | Active | |
