| Company | Timeline | Status | |
Fugro Robertson Holdings Limited Director • Geologist | 13 Aug 1997←6 Years→1 Oct 2003 | Dissolved | |
| Robertson (UK) Limited Director • Geologist | 18 Mar 1996←7 Years→1 Oct 2003 | Active | |
The Tyc Company Limited Director • Geologist | 7 Feb 1996←5 Years→26 Jul 2001 | Dissolved | |
