| Company | Timeline | Status | |
| Windsor Court (Kingston) Residents Association Limited Director • Scientific Consultant | 10 Dec 1992←1 Year 4 Months→10 Apr 1994 | Active | |
| City Computing Limited Director • Scientific Consultant | 1 Jul 1992←24 Years→27 Mar 2017 | Active | |
| Windsor Court (Kingston) Residents Association Limited Secretary • Unreported | 1 Jan 1970←24 Years→10 Apr 1994 | Active | |
