| Company | Timeline | Status | |
| Caithness Potato Breeders Limited Director • Managing Director | 13 May 2025←5 Months→Current | Active | |
| Bailey & Dunnett Ltd Director • Civil Engineer | 13 Aug 2019←5 Years→5 Nov 2024 | Dissolved | |
| Global Crops Ltd Director • Director | 25 Jun 2018←7 Years→Current | Active | |
| Caledonia Potato Holdings Ltd Director • Director | 1 Jul 2010←10 Years→30 Jun 2020 | Active | |
| Caithness Varieties Limited Director • Civil Engineer | 17 Jul 2001←24 Years→Current | Active | |
| Ove Arup & Partners Scotland Limited Director • Civil Transportation Engineer | 1 Oct 1996←6 Years→28 Feb 2003 | Active | |
