| Company | Timeline | Status | |
| John Campbell (Hanover Square) Limited Director • Director | 16 Apr 1992←31 Years→23 Aug 2023 | Active | |
| John Campbell (Hanover Square) Limited Secretary • Unreported | 16 Apr 1992←31 Years→23 Aug 2023 | Active | |
| Harvie And Hudson Limited Director • Director | 16 Apr 1991←32 Years→23 Aug 2023 | Active | |
