| Company | Timeline | Status | |
| Marsham Capital Ltd Director • Unreported | 5 May 2023←2 Years 6 Months→Current | Active | |
| Marsham Ventures Ltd Director • Unreported | 26 Jun 2018←7 Years→Current | Active | |
| Beaconsfield Director • Accountant | 30 Nov 2015←2 Years 2 Months→31 Jan 2018 | Active | |
| Mappt Limited Director • Part-time Lecturer | 6 Jan 2014←8 Years→29 Mar 2022 | Dissolved | |
| Chiltern Open Air Museum Enterprises Limited Director • Unreported | 3 Nov 2010←15 Years→Current | Active | |
| Chiltern Open-Air Museum Limited Director • Accountant | 18 May 2009←13 Years→31 Oct 2022 | Active | |
G.T.O.M. Ltd Secretary • Unreported | 2 Oct 2006←11 Years→6 Sep 2018 | Dissolved | |
G.T.O.M. Ltd Director • Accountant | 7 Apr 2006←12 Years→6 Sep 2018 | Dissolved | |
| Motionhouse Director • Accountant | 16 Jul 1992←26 Years→12 Nov 2018 | Active | |
