| Company | Timeline | Status | |
| Renodrone Ltd Director • Chartered Engineer | 12 Sep 2018←3 Years→28 Sep 2021 | Dissolved | |
| Zero Carbon Lab Ltd Director • Consultant Engineer | 12 Jul 2017←8 Years→Current | Active | |
| Emission Zero R&D Ltd Director • Consultant | 27 Feb 2012←13 Years→Current | Active | |
Oc328510 LLP Designated LLP Member • Unreported | 22 May 2007←5 Years→7 Jun 2012 | Dissolved | |
| Intesys Research Limited Director • Lecturer | 25 Aug 1999←22 Years→28 Sep 2021 | Dissolved | |
| Intesys Research Limited Secretary • Lecturer | 25 Aug 1999←22 Years→28 Sep 2021 | Dissolved | |
| Intesys Limited Director • Res/deve Consultant & Universi | 18 Dec 1992←32 Years→Current | Active | |
