| Company | Timeline | Status | |
| L.J. Group Limited Director • Electronics Engineer | 10 Mar 2006←8 Years→30 Apr 2014 | Active | |
| Digiac Limited Director • Electronics Engineer | 27 Jan 2003←11 Years→30 Apr 2014 | Active | |
| Costessey Park Limited Director • Electronics Engineer | 21 Jul 1997←14 Years→23 Jan 2012 | Active | |
| LJCR1863 Limited Director • Electronics Engineer | 7 Dec 1992←21 Years→30 Apr 2014 | Dissolved | |
