| Company | Timeline | Status | |
| Acacia Court Management Co. Limited Director • Unreported | 18 Oct 1994←31 Years→Current | Active | |
| System Control (UK) Limited Director • Unreported | 9 Dec 1993←31 Years→Current | Active | |
| System Sound (UK) Limited Director • Unreported | 9 Dec 1993←31 Years→Current | Active | |
| System Sound & Light Limited Director • Theatre Technician | 1 Jan 1970←55 Years→Current | Active | |
