| Company | Timeline | Status | |
| Marinda Developments Limited Director • Company Director | 21 Dec 1991←12 Years→8 Oct 2004 | Active | |
| HCD Engineering Limited Secretary • Unreported | 6 Dec 1991←12 Years→8 Oct 2004 | Active | |
| HCD Research Limited Secretary • Unreported | 6 Dec 1991←12 Years→8 Oct 2004 | Active | |
| Hamilton Cooper Investments Limited Director • Company Director | 31 Oct 1991←12 Years→8 Oct 2004 | Active | |
