| Company | Timeline | Status | |
| Cambridge Pixel Ltd Director • Consultant | 1 Mar 2009←10 Years→23 Jan 2020 | Active | |
Primagraphics (Holdings) Limited Director • Managing Director | 19 Aug 1999←4 Years→28 May 2004 | Dissolved | |
| Primagraphics Limited Director • Engineer | 12 Jan 1998←7 Years→31 Mar 2005 | Dissolved | |
| Scientific Digital Imaging Limited Director • Managing Director | 31 Aug 1995←2 Years 4 Months→9 Jan 1998 | Active | |
| Synoptics Limited Director • Managing Director | 3 Oct 1992←5 Years→9 Jan 1998 | Active | |
| Graticules Optics Limited Director • Managing Director | 31 Oct 1991←6 Years→9 Jan 1998 | Active | |
