| Company | Timeline | Status | |
| Sandmarten Holdings Limited Director • Unreported | 16 May 2008←17 Years→Current | Active | |
Penfold Property Investment Limited Secretary • Director | 19 Aug 2003←15 Years→25 Sep 2018 | Dissolved | |
| Swift Research Limited Secretary • Market Researcher | 26 Jan 1996←29 Years→Current | Active | |
| Swift Research Limited Director • Unreported | 26 Jan 1996←29 Years→Current | Active | |
| English Bridge Union Limited(The) Director • Company Executive/partner | 17 Oct 1991←6 Years→7 Oct 1998 | Active | |
