| Company | Timeline | Status | |
| Synatel Instrumentation Pension Trustees Limited Director • Director | 1 May 2019←5 Years→16 Jul 2024 | Dissolved | |
| Synatel Instrumentation Limited Director • Unreported | 1 Dec 2014←10 Years→Current | Active | |
| Q Rest Limited Director • Unreported | 7 Dec 2012←12 Years→Current | Active | |
| Donelec Group Limited Director • Unreported | 4 Feb 2003←22 Years→Current | Active | |
| Don Electronics Limited Director • Unreported | 5 Feb 1998←27 Years→Current | Active | |
E. Fish & Co (North West) Limited Director • Engineer | 1 Jan 1997←18 Years→23 Jun 2015 | Dissolved | |
| Don Controls Limited Secretary • Unreported | 27 Sep 1996←1 Year 8 Months→28 May 1998 | Active | |
| WM. Don Limited Director • Unreported | 30 Sep 1992←33 Years→Current | Active | |
| WM. Don Limited Secretary • Engineer | 30 Sep 1992←33 Years→Current | Active | |
| Don Controls Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
