| Company | Timeline | Status | |
| Natural Hydrogen Consultants Limited Director • Unreported | 15 May 2023←2 Years 5 Months→Current | Active | |
| Kraaivlei Konsulting Ltd Director • Unreported | 15 Jun 2021←4 Years→Current | Active | |
| Chinnor & Princes Risborough Railway Company Limited Director • Chartered Engineer | 22 Jan 2015←2 Years 6 Months→2 Aug 2017 | Active | |
| Chinnor And Princes Risborough Railway Association Limited Director • Civil Engineer | 22 Jan 2015←2 Years 6 Months→2 Aug 2017 | Active | |
