| Company | Timeline | Status | |
| Aimsir Limited Director • Proprietor | 1 Jul 2019←6 Years→Current | Active | |
| Inveraire Holdings Limited Director • Director | 22 Nov 2012←12 Years→Current | Active | |
| Kintarbert Hydro Ltd Director • Contractor | 13 Sep 2011←14 Years→Current | Active | |
| D A Macdonald (Contractors) Limited Director • Business Proprietor | 21 May 2003←22 Years→Current | Active | |
| D A Macdonald (Contractors) Limited Director • Business Proprietor | 21 May 2003←22 Years→31 Jul 2025 | Active | |
