| Company | Timeline | Status | |
| Armstrong Watson LLP Non-designated LLP Member • Unreported | 4 Apr 2025←8 Months→Current | Active | |
| Martin Aitken Financial Services Limited Director • Chartered Accountant | 1 Jul 2023←2 Years 5 Months→Current | Active | |
| Ayrshire Cancer Support Director • Finance Director | 18 Apr 2016←9 Years→28 Oct 2025 | Active | |
| Martin Aitken (Scotland) Ltd Director • Chartered Accountant | 6 Sep 2013←12 Years→Current | Active | |
| Martin Aitken & Co Ltd Director • Chartered Accountant | 10 Aug 2011←14 Years→Current | Active | |
| Caledonian Accounting Services Ltd Director • Chartered Accountant | 1 Apr 2005←20 Years→Current | Active | |
