| Company | Timeline | Status | |
| Duncan Renewable Investments Limited Director • Director | 17 Dec 2013←1 Year 3 Months→7 Apr 2015 | Active | |
| Duncan Energy Holdings Limited Director • Director | 11 Dec 2013←1 Year 3 Months→7 Apr 2015 | Active | |
| Duncan Plumbing, Heating & Electrics Limited Director • None | 6 Apr 2010←5 Years→7 Apr 2015 | Active | |
Spa Bathrooms Limited Director • Designer | 30 Nov 2007←4 Years→30 Aug 2012 | Dissolved | |
