| Company | Timeline | Status | |
| R.J. Watkinson Associates Limited Director • Chartered Engineer | 16 Aug 1993←1 Year 8 Months→30 Apr 1995 | Active | |
| R.J. Watkinson And Partners Limited Director • Chartered Engineer | 31 Dec 1991←3 Years→30 Apr 1995 | Active | |
| R.J. Watkinson And Partners Limited Director • Unreported | 1 Jan 1970←25 Years→30 Apr 1995 | Active | |
