| Company | Timeline | Status | |
Acumen Consulting Services Limited Director • Design Engineer | 1 Dec 2004←10 Years→1 Dec 2014 | Dissolved | |
| D.J.H. Engineers Limited Secretary • Designer | 12 Nov 1991←16 Years→26 Jan 2008 | Active | |
| D.J.H. Engineers Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
