| Company | Timeline | Status | |
| Borehole Gas Monitoring Ltd Director • Environmentalist | 17 Jul 2008←17 Years→Current | Active | |
| Borehole Gas Monitoring Ltd Secretary • Environmentalist | 17 Jul 2008←17 Years→Current | Active | |
| Environmental Site Sampling Ltd Director • Environmental Consultant | 3 May 2002←23 Years→Current | Active | |
| Environmental Site Sampling Ltd Secretary • Environmental Consultant | 3 May 2002←23 Years→Current | Active | |
