| Company | Timeline | Status | |
| Mason-Cole Holdings Limited Director • Unreported | 9 Dec 2011←13 Years→Current | Active | |
Plandraft.Co.UK Limited Director • Architectural Technologist | 7 Jul 2009←2 Years 5 Months→1 Jan 2012 | Dissolved | |
| J Mason Associates Limited Director • Unreported | 27 Sep 2005←20 Years→Current | Active | |
| J Mason Associates Limited Secretary • Unreported | 5 Apr 2004←21 Years→Current | Active | |
