| Company | Timeline | Status | |
| Professional Radio Systems Limited Secretary • Unreported | 29 Sep 2005←17 Years→24 Jan 2023 | Dissolved | |
| PRS Communications Limited Secretary • Unreported | 20 May 1998←27 Years→Current | Active | |
| PRS Communications Limited Secretary • Unreported | 20 May 1998←27 Years→2 Oct 2025 | Active | |
| Thornridge Limited Secretary • Unreported | 5 May 1998←27 Years→Current | Active | |
| Thornridge Limited Secretary • Unreported | 5 May 1998←27 Years→2 Oct 2025 | Active | |
