| Company | Timeline | Status | |
| J.H.Cowper Investments Limited Secretary • Unreported | 29 Jun 1991←34 Years→Current | Active | |
| Tyneside Estate Office Limited Secretary • Unreported | 29 Jun 1991←34 Years→Current | Active | |
| J.H.Cowper Investments Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
| Tyneside Estate Office Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
