| Company | Timeline | Status | |
| O'Brien Family Holdings Limited Director • Unreported | 12 Sep 2025←4 Months→Current | Active | |
| O'Brien Container And Storage (Holdings) Limited Director • Unreported | 2 Jan 2025←1 Year→Current | Active | |
| O'Brien Finance Company Limited Director • Company Director | 9 Jul 2024←1 Year 6 Months→Current | Active | |
| O'Brien Aggregate Holding Limited Director • Company Director | 28 May 2024←1 Year 7 Months→Current | Active | |
| O'Brien Aggregate Tuthill Limited Director • Company Director | 28 May 2024←1 Year 7 Months→Current | Active | |
| Dunpark Limited Director • Company Director | 20 Jul 2022←3 Years→Current | Active | |
| Timec 1779 Limited Director • Company Director | 10 Jun 2022←3 Years→Current | Active | |
| Timec 1778 Limited Director • Company Director | 9 Jun 2022←3 Years→Current | Active | |
| OBR-G Holdings Limited Director • Company Director | 29 Apr 2022←3 Years→Current | Active | |
| Chard Works Limited Director • Company Director | 29 Apr 2022←3 Years→Current | Active | |
