| Company | Timeline | Status | |
| Dukespub Ltd Director • Unreported  | 3 Nov 2025←1 Day→Current  | Active  | |
| Johnston Excavators Ltd Director • Director  | 19 Oct 2018←7 Years→Current  | Active  | |
| Johnston Tractors Limited Director • Agricultural Engineer  | 24 Nov 2011←13 Years→Current  | Active  | |
| Tractors Limited Director • Agricultural Engineer  | 22 May 2003←22 Years→Current  | Active  | |
| Agrigroup Limited Director • Director  | 6 Dec 1995←29 Years→Current  | Active  | |
| Agrigroup Limited Secretary • Director  | 6 Dec 1995←6 Years→25 Sep 2002  | Active  | |
| Frank Johnston (Tractors) Limited Director • Unreported  | 1 Jan 1970←55 Years→Current  | Active  | |
