| Company | Timeline | Status | |
| Sheffield Aero Club Limited Director • Engineer | 1 Jun 2023←5 Months→23 Nov 2023 | Active | |
| Royal Aero Club Records Racing And Rally Association Limited Director • Company Director | 30 Nov 2002←16 Years→23 Nov 2019 | Active | |
| Sheffield Aero Club Limited Director • Company Director | 23 Sep 1999←13 Years→5 Sep 2013 | Active | |
| Prodec Precision Manufacturing Co. Limited Director • Engineer | 30 May 1991←34 Years→Current | Active | |
| Prodec Engineering Co. Limited Director • Engineer | 30 May 1991←34 Years→Current | Active | |
| Prodec (Holdings) Limited Director • Engineer | 31 Jan 1991←34 Years→Current | Active | |
