| Company | Timeline | Status | |
| Optosignal Limited Director • Barrister-at-law | 4 Feb 1993←32 Years→Current | Active | |
| Optosignal Limited Secretary • Unreported | 20 Nov 1992←32 Years→Current | Active | |
| Barnard Microsystems Limited Director • Barrister | 19 Jun 1991←10 Years→31 Mar 2002 | Active | |
