| Company | Timeline | Status | |
| Duncan Plant Hire (Group) Ltd Director • Company Director | 7 Dec 2023←1 Year 10 Months→Current | Active | |
Duncan Plant Ltd Director • Company Director | 12 Feb 2010←4 Years→3 Oct 2014 | Dissolved | |
Tam O'Shanter Transport Cafe Limited Director • Company Director | 30 Dec 2009←8 Years→30 Jan 2018 | Dissolved | |
| D & W Megamix Ltd Director • Director | 22 Feb 2007←18 Years→Current | Active | |
| Duncan Plant Hire Limited Director • Company Director | 20 Jan 1999←26 Years→Current | Active | |
