| Company | Timeline | Status | |
| Dartford Metalcrafts Ltd Director • Engineer | 29 Sep 2000←3 Years→31 Jan 2004 | Active | |
| Quartic Properties Ltd Director • Engineer | 20 Nov 1991←33 Years→Current | Active | |
| Quartic Properties Ltd Secretary • Engineer | 20 Nov 1991←33 Years→Current | Active | |
| Quartic Engineering Ltd Director • Engineer | 7 Aug 1991←12 Years→31 Jan 2004 | Active | |
