| Company | Timeline | Status | |
| Harkin Group Limited Secretary • Unreported | 7 Jun 2005←20 Years→Current | Active | |
| DWJ Harkin Ltd Secretary • Unreported | 29 Dec 1991←33 Years→Current | Active | |
J. & J. Harkin Limited Secretary • Unreported | 28 Mar 1991←29 Years→14 Jul 2020 | Dissolved | |
