| Company | Timeline | Status | |
| Ducting Online Limited Director • Director | 4 Mar 2010←15 Years→Current | Active | |
Airvent Installations Limited Director • Engineer | 6 Nov 1998←15 Years→8 Apr 2014 | Dissolved | |
| Woodwaste Control Engineering Limited Director • Engineer | 31 Dec 1991←33 Years→Current | Active | |
| Spira U.K. Limited Director • Engineer | 21 Aug 1991←34 Years→Current | Active | |
