| Company | Timeline | Status | |
| Robert Williamson (Developments) Limited Director • Housewife | 31 Dec 1988←31 Years→8 Dec 2020 | Active | |
| Robert Williamson (Developments) Limited Secretary • Unreported | 31 Dec 1988←31 Years→8 Dec 2020 | Active | |
| Rosehall Garage Limited Director • Company Director | 31 Dec 1988←31 Years→8 Dec 2020 | Active | |
| Rosehall Garage Limited Secretary • Unreported | 31 Dec 1988←31 Years→8 Dec 2020 | Active | |
