| Company | Timeline | Status | |
| Yha (England And Wales) Director • Geologist  | 18 Sep 1999←1 Year→23 Sep 2000  | Active  | |
| Gesgb Conferences Limited Director • Geophysicist  | 13 Jun 1995←3 Years→30 Oct 1998  | Active  | |
| Lynx Information Systems Limited Director • Geologist/sales  | 20 Dec 1991←3 Years→6 Sep 1995  | Active  | |
