| Company | Timeline | Status | |
| R6 Eco-Engine Ltd Director • Engineering Consultant | 15 Sep 2020←1 Year 10 Months→18 Jul 2022 | Dissolved | |
| Libralato Limited Director • Engineering Consultant | 19 Jan 2011←10 Years→14 Jan 2022 | Dissolved | |
| The Engine Consultancy Limited Director • Engineer | 23 Jul 2008←12 Years→20 Jun 2021 | Active | |
