| Company | Timeline | Status | |
| Opus 21 Limited Director • Engineer | 27 Oct 2005←20 Years→Current | Active | |
| Ipec Limited Director • Engineer | 14 Jul 2005←4 Years→29 Mar 2010 | Active | |
| Dorchester Sailing Club Director • Electronics Engineer | 25 Nov 2004←7 Years→10 Dec 2011 | Active | |
Particle Measuring Systems Limited Director • Technical Director | 31 Dec 1997←7 Years→24 Feb 2005 | Dissolved | |
