| Company | Timeline | Status | |
| Birnie Gowkhill Energy Ltd Director • Fisherman | 18 Jul 2017←8 Years→Current | Active | |
| MJ French Fish Export Limited Director • Fisherman | 16 May 2013←4 Years→20 Jul 2017 | Active | |
| Gulfridge Energy Ltd Director • Director | 15 Dec 2011←12 Years→6 Aug 2024 | Dissolved | |
Castlehill Oil Limited Director • Fisherman | 22 Dec 2009←7 Years→13 Jun 2017 | Dissolved | |
| Fishermen's Petroleum Company Limited Director • Fishing Skipper | 1 Mar 2006←17 Years→23 Mar 2023 | Active | |
| Gulfridge Limited Director • Fisherman | 23 Nov 2005←20 Years→Current | Active | |
| North East Fishermen's Training Association Limited Director • Fishing Skipper | 17 Jun 2005←15 Years→18 Jun 2020 | Active | |
| Castlehill LLP Designated LLP Member • Unreported | 21 Dec 2001←23 Years→Current | Active | |
| Scottish Fishermen's Organisation Limited Director • Fisherman | 31 Dec 1995←29 Years→Current | Active | |
| Scottish Pelagic Fishermen's Association Limited Director • Fisherman | 19 May 1990←34 Years→22 Jun 2024 | Active | |
