| Company | Timeline | Status | |
| Yeung's Chinese Foods Limited Director • Director | 9 Apr 2019←6 Years→Current | Active | |
| Whittaker Estate Company,Limited Director • Company Director | 8 Mar 2007←18 Years→Current | Active | |
| Innovative Solutions (UK) Limited Director • Managing Director | 30 Jun 2006←19 Years→Current | Active | |
| Richard Whittaker Holdings Limited Director • Director | 11 Nov 2002←22 Years→Current | Active | |
| G.B. (Starches) Limited Director • Company Director | 31 Jul 1991←34 Years→Current | Active | |
| S.W. Royse (Chemicals) Limited Director • Company Director | 31 Jul 1991←34 Years→Current | Active | |
| Richard Whittaker Limited Director • Company Director | 31 Jul 1991←34 Years→Current | Active | |
