| Company | Timeline | Status | |
| Durkin Power Engineering Limited Director • Surveyor | 1 Sep 1995←30 Years→Current | Active | |
| Durkin Civil Engineering Limited Director • Surveyor | 27 Feb 1992←33 Years→Current | Active | |
| Durkin And Sons Limited Director • Company Director | 31 Jul 1991←34 Years→Current | Active | |
