| Company | Timeline | Status | |
| Martin Birch Investments Limited Director • Director | 9 Aug 2020←5 Years→Current | Active | |
| Martin Birch Overseas Limited Director • Director | 9 Aug 2020←5 Years→Current | Active | |
| Martin Birch Limited Secretary • Unreported | 8 May 1991←34 Years→Current | Active | |
| Martin Birch Limited Director • Director | 1 Mar 1991←34 Years→Current | Active | |
