| Company | Timeline | Status | |
| J.K.C.Specialist Cars Limited Director • Unreported | 30 Nov 1978←46 Years→Current | Active | |
| Derry Garages Limited Secretary • Unreported | 29 Jun 1976←49 Years→Current | Active | |
| Derry Garages Limited Director • Unreported | 29 Jun 1976←49 Years→Current | Active | |
| J. K. C. Garages (Coleraine) Limited Director • Unreported | 12 Jun 1972←53 Years→Current | Active | |
