| Company | Timeline | Status | |
| Absolute Instruments Limited Director • Director | 10 Aug 1999←16 Years→24 Dec 2015 | Dissolved | |
Thermapro Limited Director • Director | 10 Oct 1991←10 Years→14 Aug 2002 | Dissolved | |
| Sidwell Computers Limited Director • Director | 14 Sep 1991←34 Years→Current | Active | |
