| Company | Timeline | Status | |
| WTH (Holdings) Limited Director • Director | 8 Dec 2020←5 Years→Current | Active | |
| The High School Of Glasgow Director • Company Director | 3 Dec 2020←4 Years→15 May 2025 | Active | |
| Saint Burgins Holdings Ltd Director • Director | 15 May 2019←6 Years→Current | Active | |
| Cairnhill Structures (UK) Ltd Director • Director | 9 Feb 2018←7 Years→Current | Active | |
| Marmalade Estates Ltd Director • Director | 15 Jun 2016←9 Years→Current | Active | |
Findlay Campbell (Blacksmiths) Limited Director • None | 31 Mar 2015←3 Years→18 Dec 2018 | Dissolved | |
| Culnacraig Ltd Director • Consultant | 18 Dec 2014←10 Years→Current | Active | |
| Watson-Towers Limited Director • None | 25 Aug 2011←14 Years→Current | Active | |
| Cairnhill Structures Limited Director • None | 25 Aug 2011←14 Years→Current | Active | |
| Watson-Towers (Holdings) Limited Director • None | 25 Aug 2011←14 Years→Current | Active | |
