| Company | Timeline | Status | |
| Power Enable Solutions Limited Director • Director | 25 Sep 2024←1 Year→Current | Active | |
| Zephir Limited Director • Consultant | 10 May 2018←7 Years→Current | Active | |
Res Heat And Power Limited Director • Technical Director | 14 Oct 2008←2 Years 3 Months→27 Jan 2011 | Dissolved | |
| Renewable Energy Centre Limited Director • Technical Directors | 14 Oct 2008←7 Years→30 Sep 2016 | Dissolved | |
| Renewable Energy Systems Limited Director • Technical Director | 20 Nov 2003←12 Years→30 Sep 2016 | Active | |
| Renewable Energy Group Limited Director • Technical Director | 5 Nov 2003←12 Years→30 Sep 2016 | Active | |
| Dyffryn Brodyn Limited Director • Technical Director | 21 Sep 1998←5 Years→31 Oct 2003 | Active | |
| Four Burrows Limited Director • Technical Director | 21 Sep 1998←5 Years→31 Oct 2003 | Active | |
| Renewable UK Association Director • Engineer | 21 Jun 1991←2 Years 9 Months→31 Mar 1994 | Active | |
