| Company | Timeline | Status | |
| Calder Campers Limited Director • Sales Manager | 4 May 2016←1 Year 6 Months→15 Nov 2017 | Active | |
| Kountrylite Limited Director • Company Director | 28 Oct 2015←5 Years→20 Apr 2021 | Dissolved | |
| Calder Leisure Sales Limited Director • Managing Director | 19 Mar 2007←14 Years→23 Mar 2021 | Dissolved | |
| Calder Motor Company Limited Director • Car Salesman | 8 Oct 2003←11 Years→17 Oct 2014 | Active | |
