| Company | Timeline | Status | |
Engineer-Ash Limited Director • Chartered Engineer  | 7 Apr 2010←8 Years→9 Oct 2018  | Dissolved  | |
| MLM Holdings Limited Director • Chartered Engineer  | 5 Apr 2001←9 Years→30 Jun 2010  | Active  | |
| Sweco Consulting Engineers Limited Director • Chartered Engineer  | 1 May 1997←13 Years→30 Jun 2010  | Active  | |
