| Company | Timeline | Status | |
| Exchange Telecom Limited Director • Director | 17 Feb 1999←2 Years 10 Months→31 Dec 2001 | Dissolved | |
| Gall Thomson Environmental Limited Director • Director | 8 Dec 1993←1 Year 6 Months→5 Jul 1995 | Active | |
Harbyn Limited Director • Company Director | 21 Nov 1991←23 Years→18 Mar 2015 | Dissolved | |
