| Company | Timeline | Status | |
| Praemonitus Limited Director • Company Director | 5 Sep 2002←19 Years→15 Dec 2021 | Dissolved | |
| R. D. P. Photonics Limited Director • Company Director | 4 Oct 1996←29 Years→Current | Active | |
| R.D.P. Group Limited Director • Director | 16 Jan 1992←34 Years→Current | Active | |
| R.D.P. Electronics Limited Director • Director | 16 Jan 1991←35 Years→Current | Active | |
| R.D.P. Electronics Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
| R.D.P. Group Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
