| Company | Timeline | Status | |
| 18-20 Randolph Crescent Limited Director • Scientist | 27 Nov 1991←34 Years→Current | Active | |
| Triangle Amenity Limited Director • Scientist | 10 Aug 1991←3 Years→10 Aug 1994 | Active | |
| 18-20 Randolph Crescent Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
