| Company | Timeline | Status | |
| C & A Graham Farm Limited Director • Farmer | 16 Jul 2024←1 Year 3 Months→Current | Active | |
| Northumbria Helicopters Limited Director • Farmer | 31 Jul 2009←2 Years 2 Months→27 Oct 2011 | Active | |
| Yanmore Limited Director • Farmer | 29 Apr 2002←23 Years→Current | Active | |
| Solway Light Aviation Limited Director • Farmer | 19 Nov 1998←5 Years→14 Apr 2004 | Active | |
| Stranoch Windfarm Limited Director • Farmer | 26 Aug 1993←5 Years→31 Jul 1999 | Active | |
| Stranoch Windfarm Limited Secretary • Unreported | 3 Aug 1993←1 Year 11 Months→17 Jul 1995 | Active | |
