| Company | Timeline | Status | |
| Chinnor & Princes Risborough Railway Company Limited Director • Retired | 31 May 2017←8 Years→Current | Active | |
| Chinnor And Princes Risborough Railway Association Limited Director • Retired | 31 May 2017←8 Years→Current | Active | |
| Stanley Hart Consultancy Services Ltd Director • Company Director | 12 Nov 2013←11 Years→Current | Active | |
