| Company | Timeline | Status | |
| Timber Development UK Limited Director • Timber Merchant | 21 Jan 1998←1 Year 12 Months→19 Jan 2000 | Active | |
| Aitken & Howard Demerara Limited Director • Timber Merchant | 9 Oct 1992←33 Years→Current | Active | |
| Gilmour & Aitken, Limited Director • Timber Merchant | 30 Aug 1990←35 Years→Current | Active | |
| Aitken & Stewart Limited Director • Timber Merchant | 25 Sep 1989←36 Years→Current | Active | |
| Aitken & Howard Limited Director • Timber Merchant | 25 Sep 1989←36 Years→Current | Active | |
