| Company | Timeline | Status | |
| Clarkson Joinery & Furniture Ltd Director • Unreported | 20 Dec 2013←12 Years→Current | Active | |
| JD Developments (London) Limited Director • Unreported | 24 Jan 2006←20 Years→Current | Active | |
| Clarkson Builders Limited Director • Builder | 18 Feb 1997←28 Years→Current | Active | |
