| Company | Timeline | Status | |
| Servowatch Systems Limited Director • Engineer | 5 Dec 1991←20 Years→3 Apr 2012 | Liquidation | |
| Thalest Limited Director • Engineer | 5 Dec 1991←18 Years→1 Apr 2010 | Dissolved | |
| Servowatch Systems Limited Director • Unreported | 1 Jan 1970←42 Years→3 Apr 2012 | Liquidation | |
