| Company | Timeline | Status | |
| John Excell Marine Surveys Ltd Director • Company Director | 11 Apr 2021←6 Months→19 Oct 2021 | Dissolved | |
| Marine Surveying Academy Ltd Director • Company Director | 2 Jan 2018←6 Years→24 Jan 2024 | Active | |
| Excell Marine Limited Director • Company Director | 7 Apr 2016←5 Years→19 Oct 2021 | Dissolved | |
