| Company | Timeline | Status | |
| Quadrangle Centre Limited Director • Director | 30 Jul 1991←6 Months→30 Jan 1992 | Active | |
| Highland (Assets) Limited Director • Chartered Engineer | 8 Sep 1989←2 Years 4 Months→30 Jan 1992 | Liquidation | |
| McGregor Construction (Highlands) Limited Director • Chartered Engineer | 8 Sep 1989←2 Years 4 Months→30 Jan 1992 | Liquidation | |
| Abergreg Limited Director • Chartered Engineer | 8 Sep 1989←2 Years 4 Months→30 Jan 1992 | Dissolved | |
| Gregstorn Limited Director • Chartered Engineer | 8 Sep 1989←2 Years 4 Months→30 Jan 1992 | Active | |
