| Company | Timeline | Status | |
| Boocock Trading Limited Director • Director  | 1 Apr 2003←22 Years→Current  | Active  | |
| Caltech Service Company Limited Director • Engineer  | 1 Jun 2001←4 Years→31 Aug 2005  | Active  | |
Tritec Engineering Limited Director • Engineer  | 18 Aug 1998←18 Years→22 Nov 2016  | Dissolved  | |
Tritec Engineering Limited Secretary • Engineer  | 18 Aug 1998←18 Years→22 Nov 2016  | Dissolved  | |
| Combustion Installations Limited Secretary • Unreported  | 26 Apr 1991←34 Years→Current  | Active  | |
| Combustion Installations Limited Director • Engineer  | 26 Apr 1991←34 Years→Current  | Active  | |
| Sunbury Engineering Company Limited Secretary • Unreported  | 26 Apr 1991←34 Years→Current  | Active  | |
| Sunbury Engineering Company Limited Director • Unreported  | 1 Jan 1970←55 Years→Current  | Active  | |
