| Company | Timeline | Status | |
| R.J. Watkinson Associates Limited Director • Chartered Engineer | 16 Aug 1993←8 Years→26 Apr 2002 | Active | |
| R.J. Watkinson And Partners Limited Director • Chartered Engineer | 31 Dec 1991←10 Years→26 Apr 2002 | Active | |
| R.J. Watkinson And Partners Limited Director • Unreported | 1 Jan 1970←32 Years→26 Apr 2002 | Active | |
