| Company | Timeline | Status | |
| Ecowin Ltd Director • Self Employed  | 13 Apr 2012←6 Years→25 Aug 2018  | Active  | |
Passive House Centre Limited Director • Director  | 4 Feb 2010←5 Years→6 Feb 2015  | Dissolved  | |
| Sustainable Homes Scotland Ltd Director • Director  | 20 Sep 2007←1 Year→1 Oct 2008  | Active  | |
