| Company | Timeline | Status | |
| McQuillan Brothers (Builders) Limited Director • Project Support | 31 Dec 1992←32 Years→Current | Active | |
| Rockmaze Limited Director • Director | 4 Apr 1991←34 Years→Current | Active | |
| Rockmaze Limited Director • Director | 4 Apr 1991←34 Years→1 Sep 2025 | Active | |
| McQuillan Brothers (Builders) Limited Director • Project Support | 1 Jan 1970←55 Years→1 Sep 2025 | Active | |
