| Company | Timeline | Status | |
Airo Robotics Limited Director • Engineer | 6 Feb 2003←12 Years→21 Jul 2015 | Dissolved | |
| Grey Cygnet Limited Director • Engineer | 19 Dec 1990←35 Years→Current | Active | |
| Grey Cygnet Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
