| Company | Timeline | Status | |
| John Cullen Holdings Limited Director • Director | 10 Mar 2022←3 Years→Current | Active | |
| Wilton Real Estate Capital Limited Director • Lighting Consultant | 3 Aug 2015←10 Years→Current | Active | |
| Ivory Place Management Limited Director • Designer | 23 Dec 2009←15 Years→Current | Active | |
| Lighting Design Limited Director • Director | 19 Aug 1996←29 Years→Current | Active | |
| John Cullen Lighting Limited Director • Director | 17 Feb 1992←33 Years→Current | Active | |
| Lighting Design International Limited Director • Director | 4 Jan 1992←33 Years→Current | Active | |
