| Company | Timeline | Status | |
| J.A. Richardson (Holdings) Ltd Director • Director | 11 Oct 2017←8 Years→Current | Active | |
| Jefferson Asset Management Ltd Director • Director | 26 Jul 2012←13 Years→Current | Active | |
| Dell Engineering Services Limited Director • Company Director | 1 Aug 2010←15 Years→Current | Active | |
| Dell Engineering Services Limited Secretary • Engineer | 20 Oct 2003←22 Years→Current | Active | |
| J.A. Richardson (Electrical) Limited Director • Engineer | 31 Dec 1991←34 Years→Current | Active | |
| J.A. Richardson (Electrical) Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
