| Company | Timeline | Status | |
| Lock Plant Limited Director • Office Manager | 14 Dec 1991←32 Years→27 Aug 2024 | Dissolved | |
| Lock C.E. Limited Director • Office Manager | 26 Apr 1991←34 Years→Current | Liquidation | |
| Lock C.E. Limited Secretary • Unreported | 26 Apr 1991←34 Years→Current | Liquidation | |
