| Company | Timeline | Status | |
| Sensibly Zero Limited Director • Engineer | 9 Oct 2006←19 Years→Current | Active | |
| High Orbit Limited Director • Engineer | 9 Oct 2006←19 Years→Current | Active | |
| Infrastructure Project Financial Analysis Limited Director • Engineer | 18 Jun 2003←22 Years→Current | Active | |
| Tariffology Limited Director • Unreported | 18 Jun 2003←22 Years→Current | Active | |
| Prescientia Limited Director • Engineer | 18 Aug 1998←27 Years→Current | Active | |
| Prescientia Limited Secretary • Engineer | 18 Aug 1998←27 Years→Current | Active | |
| Biba Networks Limited Director • Engineer | 1 Jul 1998←27 Years→Current | Active | |
