| Company | Timeline | Status | |
| Derwent Training Association Director • Financial Controller | 18 Dec 2008←1 Year 6 Months→1 Jul 2010 | Active | |
| Firmac Engineering Services Limited Secretary • Unreported | 17 Aug 2005←12 Years→25 Sep 2017 | Active | |
| Firth Sheet Metal Limited Secretary • Unreported | 26 Jul 2002←15 Years→30 Sep 2017 | Active | |
| Firmac Limited Secretary • Unreported | 26 Jul 2002←16 Years→3 Aug 2018 | Active | |
| L.H.Sleightholme Limited Secretary • Unreported | 13 Jan 1999←3 Years→1 Apr 2002 | Liquidation | |
