| Company | Timeline | Status | |
| Caledonian Marts Limited Director • Farmer | 13 Apr 2015←10 Years→Current | Active | |
| Argent Energy Group Limited Director • Farmer | 26 May 2010←3 Years→18 Jul 2013 | Dissolved | |
| National Beef Association Director • Farmer | 4 Dec 1998←1 Year 5 Months→31 May 2000 | Active | |
| Kingdom FM Radio Ltd Director • Company Director | 15 Jun 1997←21 Years→8 Mar 2019 | Active | |
Stagecoach SWT Oldco Limited Director • Farmer/landowner | 21 Feb 1996←11 Years→1 Mar 2007 | Dissolved | |
| Luing Cattle Society Limited (The) Director • Farmer | 20 Mar 1990←11 Months→19 Feb 1991 | Active | |
The Macaulay Land Use Research Institute Director • Farmer | 12 Jul 1989←2 Years 8 Months→31 Mar 1992 | Dissolved | |
Ua Group Limited Director • Company Director | 3 Jun 1989←3 Years→12 Aug 1992 | Dissolved | |
| LT One Limited Director • Farmer | 14 Oct 1988←35 Years→9 Jul 2024 | Dissolved | |
Scotmat Ltd Director • Farmer | 14 Oct 1988←2 Years→14 Oct 1990 | Dissolved | |
