| Company | Timeline | Status | |
| R.J. Watkinson Associates Limited Director • Chartered Engineer | 16 Aug 1993←5 Years→30 Jul 1999 | Active | |
| R.J. Watkinson And Partners Limited Director • Chartered Engineer | 31 Dec 1991←7 Years→30 Jul 1999 | Active | |
| R.J. Watkinson And Partners Limited Director • Unreported | 1 Jan 1970←29 Years→30 Jul 1999 | Active | |
