| Company | Timeline | Status | |
| Gary Clarke Investments Ltd Director • Director | 3 Dec 2015←9 Years→Current | Active | |
| Jo Frances Limited Secretary • Managing Director | 25 May 2007←6 Years→23 Apr 2014 | Dissolved | |
Crystal Two Way Radio LLP Designated LLP Member • Unreported | 16 May 2007←9 Years→24 May 2016 | Dissolved | |
| Crystal Radio Systems Limited Director • Director | 20 Jul 1999←26 Years→Current | Active | |
| Crystal Radio Systems Limited Secretary • Sales Manager | 20 Jul 1999←2 Years 6 Months→31 Jan 2002 | Active | |
