| Company | Timeline | Status | |
| Diamond Music Limited Secretary • Unreported | 11 Jan 1996←29 Years→Current | Active | |
| Lindsey Diamond Limited Secretary • Company Secretary | 1 Feb 1995←30 Years→Current | Active | |
| St Martins Music Limited Secretary • Unreported | 1 Feb 1995←1 Year 10 Months→28 Nov 1996 | Active | |
