| Company | Timeline | Status | |
| Stevenson Astrosat Ltd Director • Unreported | 24 Nov 2021←4 Years→Current | Active | |
| Stevenson Industries Limited Director • Physicist | 5 Nov 2021←4 Years→Current | Active | |
| Orbis Ltd Director • Director | 20 Oct 2021←2 Years 9 Months→13 Aug 2024 | Dissolved | |
Apogee Construction (Musselburgh) Limited Director • Physicist/astronautical Engineer | 5 Aug 2015←2 Years 5 Months→9 Jan 2018 | Dissolved | |
| Astrosat Rapid Limited Director • Physicist/astronautical Engineer | 17 Apr 2015←9 Years→18 Jun 2024 | Dissolved | |
