| Company | Timeline | Status | |
| Riley Register Spares Limited Director • Retired | 20 Mar 2022←3 Years→Current | Active | |
Blue Diamond Spares Limited Director • Retired | 29 May 2016←8 Months→21 Feb 2017 | Dissolved | |
| The Riley R.M. Centre Limited Director • Retired | 30 Mar 2015←4 Years→23 Mar 2020 | Active | |
| Peak District Mines Historical Society Limited(The) Director • Retired | 27 Nov 2010←1 Year 4 Months→31 Mar 2012 | Active | |
| Peak District Mines Historical Society Limited(The) Director • Audio Visual Technician | 26 Nov 2005←12 Months→25 Nov 2006 | Active | |
| Peak District Mines Historical Society Limited(The) Director • Service Technician | 21 Nov 1998←6 Years→27 Nov 2004 | Active | |
