| Company | Timeline | Status | |
| Delta Green Environmental Design Limited Director • Engineering Consultant | 11 Apr 2011←14 Years→Current | Active | |
| Hamson Barron Smith Limited Director • Engineer | 1 Apr 2009←3 Years→7 Jun 2012 | Active | |
John Packer Associates Limited Director • Mech Eng | 13 Dec 2006←5 Years→30 Apr 2012 | Dissolved | |
