| Company | Timeline | Status | |
John Duplock Environmental Limited Director • Decorator | 6 Sep 2011←7 Years→18 Dec 2018 | Dissolved | |
| John Duplock Decorators Limited Director • Decorators | 18 Dec 2002←22 Years→Current | Active | |
| John Duplock Decorators Limited Secretary • Decorators | 18 Dec 2002←22 Years→Current | Active | |
