| Company | Timeline | Status | |
Helveta Limited Director • Director | 6 Apr 2004←4 Years→13 Nov 2008 | Dissolved | |
| VSN International Limited Director • Director | 3 Jul 2000←5 Years→5 Jan 2006 | Active | |
| Jisc Services Limited Director • Managing Director | 10 Mar 1994←4 Years→10 Jun 1998 | Active | |
| Numerical Algorithms Group Limited (The) Director • Computing | 31 Oct 1991←12 Years→31 Jul 2004 | Active | |
