| Company | Timeline | Status | |
| M.C. Thomson & Company Limited Director • Director | 27 Dec 1996←28 Years→Current | Active | |
| West Haugh Farm Limited Director • Horticulure Consultant | 12 Feb 1996←29 Years→Current | Active | |
| Thomas Thomson (Blairgowrie) Limited Director • Horticultural Consultant | 30 Nov 1995←29 Years→Current | Active | |
