| Company | Timeline | Status | |
| Sigmaco LLP Designated LLP Member • Unreported | 20 Dec 2024←10 Months→Current | Active | |
| Park Farm Renewables Ltd Director • Director | 22 Oct 2013←5 Months→31 Mar 2014 | Active | |
| Biomass Heat Solutions Ltd Director • Company Director | 23 Jan 2012←9 Years→10 Aug 2021 | Dissolved | |
| Biomass Heat Solutions Ltd Director • Director | 23 Jan 2012←2 Years 2 Months→31 Mar 2014 | Dissolved | |
| Sigma Consult Limited Director • Director | 16 Aug 2010←15 Years→Current | Active | |
