| Company | Timeline | Status | |
| Carbon Catcher Limited Director • Director | 18 Nov 2021←4 Years→Current | Active | |
D.C. Marine Limited Director • Technical Director | 8 Aug 2013←4 Years→1 May 2018 | Dissolved | |
| D C Developments (Engineering) Limited Director • Technical Director | 14 Aug 2009←16 Years→Current | Active | |
