| Company | Timeline | Status | |
| Uotec Limited Director • Inventor | 3 Oct 2006←14 Years→30 Mar 2021 | Dissolved | |
Hirst Solutions Limited Director • Inventor | 1 Sep 2003←14 Years→23 Jan 2018 | Dissolved | |
Ecameter Limited Director • Inventor | 4 Apr 2003←17 Years→27 Oct 2020 | Dissolved | |
| Open Energi Limited Director • Inventor | 9 Sep 1999←9 Years→31 Oct 2008 | Active | |
Meteringforreserve Limited Director • Inventor | 3 Sep 1999←14 Years→7 Jan 2014 | Dissolved | |
| Frequencytellsprice Limited Director • Inventor | 3 Sep 1999←21 Years→30 Mar 2021 | Dissolved | |
