| Company | Timeline | Status | |
| Environmental Economics Limited Director • Unreported | 13 Apr 2007←18 Years→Current | Active | |
| Environmental Economics Limited Secretary • Co Director | 13 Apr 2007←18 Years→Current | Active | |
| Thermal Economics Limited Secretary • Unreported | 17 Oct 1992←33 Years→Current | Active | |
| Thermal Economics Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
