| Company | Timeline | Status | |
| O'Brien Estates Limited Secretary • Unreported | 24 Sep 1998←27 Years→Current | Active | |
| O'Brien Estates Limited Director • Director | 31 Oct 1991←34 Years→Current | Active | |
| O'Brien Estates Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
