| Company | Timeline | Status | |
Davidson Chalmers (Overton Farm Security Party) Limited Director • Farmer | 16 Dec 2010←6 Years→29 Aug 2017 | Dissolved | |
| D.S. ORR & Sons (Holdings) Limited Director • Farmer | 14 Feb 2003←18 Years→15 May 2021 | Active | |
| T. ORR & Company Limited Director • Farmer | 10 May 2002←19 Years→15 May 2021 | Active | |
