| Company | Timeline | Status | |
| Environmental Solutions International Limited Director • Civil Engineer | 7 Jul 2009←1 Year 4 Months→1 Dec 2010 | Active | |
| Danfo (UK) Limited Director • Chartered Engineer | 2 Sep 1994←2 Years 4 Months→31 Dec 1996 | Active | |
Systems Process Technology Limited Director • Engineer | 31 Dec 1991←11 Years→28 Feb 2003 | Dissolved | |
