| Company | Timeline | Status | |
| Parkman Holdings Limited Director • Chartered Engineer | 29 Sep 1994←5 Years→22 May 2000 | Dissolved | |
Parkman Group Professional Services Limited Director • Chartered Engineer | 21 Feb 1992←8 Years→22 May 2000 | Dissolved | |
| Parkman Consultants Limited Director • Chartered Engineer | 22 Jun 1991←13 Years→31 Oct 2004 | Dissolved | |
