| Company | Timeline | Status | |
| Entryvision Limited Secretary • Sales Director | 1 Oct 1992←28 Years→20 Apr 2021 | Dissolved | |
| Video Entryphone Limited Director • Sales Director | 21 Sep 1992←28 Years→20 Apr 2021 | Dissolved | |
| Entryphone Company Limited(The) Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
