| Company | Timeline | Status | |
| Glaziers Hall Limited Director • Consultant | 24 Nov 2000←10 Years→30 Sep 2011 | Active | |
| East Surrey Dial-A-Ride Director • Chartered Engineer | 26 Mar 1999←4 Years→22 Oct 2003 | Active | |
| East Surrey Dial-A-Ride Secretary • Chartered Engineer | 26 Mar 1999←4 Years→22 Oct 2003 | Active | |
| Scientific Instrument Makers Hall Limited Director • Chartered Engineer | 16 Sep 1998←15 Years→17 Dec 2013 | Active | |
| Sira Certification Service Limited Director • Company Secretary | 30 Oct 1991←4 Years→23 Apr 1996 | Dissolved | |
| The International Instrument Users' Association Secretary • Unreported | 24 Oct 1990←23 Years→9 Dec 2013 | Active | |
