| Company | Timeline | Status | |
| Mackay Developments Limited Secretary • Unreported | 20 Sep 1996←29 Years→Current | Active | |
| John Mackay (Plant) Limited Director • Farmer | 18 Oct 1994←31 Years→Current | Active | |
| Precision Relays Limited Director • Farmer | 18 Oct 1994←20 Years→26 Jun 2015 | Active | |
| John Mackay (Plant) Limited Secretary • Unreported | 21 Jun 1992←33 Years→Current | Active | |
| Precision Relays Limited Secretary • Unreported | 21 Jun 1992←23 Years→26 Jun 2015 | Active | |
