| Company | Timeline | Status | |
| Aveling-Barford Limited Director • Engineer | 6 May 2003←22 Years→Current | Active | |
| Aveling & Porter Limited Director • Engineer | 6 May 2003←22 Years→Current | Active | |
| John Fowler & Co (Leeds) Limited Director • Engineer | 6 May 2003←11 Years→4 Jun 2014 | Active | |
| Marshall Sons & Company Limited Director • Engineer | 6 May 2003←15 Years→22 Jan 2019 | Active | |
| Richard Garrett & Sons Limited Director • Photographer | 8 Sep 1999←26 Years→Current | Active | |
| National Traction Engine Trust Director • Photographer | 20 Dec 1991←1 Year 11 Months→20 Nov 1993 | Active | |
