| Company | Timeline | Status | |
| Strathallan School Director • Farmer | 9 Dec 1989←17 Years→24 Nov 2007 | Active | |
| Dorward Gray Limited Director • Farmer | 18 Sep 1989←36 Years→Current | Liquidation | |
The Scottish Crop Research Institute Director • Farmer | 29 Aug 1989←7 Years→31 Mar 1997 | Dissolved | |
