| Company | Timeline | Status | |
| Penham Engineering Limited Director • Engineer | 18 Dec 2014←6 Years→28 Sep 2021 | Dissolved | |
Powercord Engineering Limited Director • Engineer | 14 Dec 2005←8 Years→30 Sep 2014 | Dissolved | |
| Penham Engineering Limited Secretary • Unreported | 29 Mar 1998←23 Years→28 Sep 2021 | Dissolved | |
| ASH Close Management Limited Director • Electronic Engineer | 13 May 1991←3 Months→12 Aug 1991 | Active | |
