| Company | Timeline | Status | |
| Systena Limited Director • Director | 25 May 2004←17 Years→12 Oct 2021 | Active | |
| Systena Limited Secretary • Unreported | 25 May 2004←17 Years→12 Oct 2021 | Active | |
| Greenwich Observatory Limited Director • Company Director | 29 May 1998←23 Years→24 Aug 2021 | Dissolved | |
