| Company | Timeline | Status | |
| David Hume Institute The Director • Co. Director  | 13 Mar 1998←8 Years→5 Dec 2006  | Converted/Closed  | |
| Phab UK Enterprises Limited Director • Company Director  | 28 Jan 1997←8 Months→21 Oct 1997  | Active  | |
| Duncan Property Investments Limited Director • Director  | 8 Nov 1995←30 Years→Current  | Active  | |
| Phab Limited Director • Director  | 11 May 1994←3 Years→21 Oct 1997  | Active  | |
Colvin Nursing Agency Limited Director • Director  | 19 Jul 1991←3 Years→6 Apr 1995  | Dissolved  | |
| Spacelabs Healthcare Limited Director • Director  | 19 Jul 1991←15 Years→25 May 2007  | Active  | |
| Merlin INNS Limited Director • Director  | 28 Feb 1991←4 Years→19 Apr 1995  | Active  | |
| IBG Immucor Limited Director • Unreported  | 1 Jan 1970←27 Years→1 Dec 1997  | Active  | |
