| Company | Timeline | Status | |
| Great Western Preservations Limited Director • Scientist | 20 Oct 2012←13 Years→Current | Active | |
| Great Western Preservations Limited Director • Scientist | 5 Jun 2001←6 Years→27 Sep 2007 | Active | |
| Great Western Society Limited Director • Scientist | 24 Nov 1992←32 Years→Current | Active | |
| Great Western Society Limited Secretary • Unreported | 24 Nov 1992←9 Years→12 Feb 2002 | Active | |
| Didcot Railway Centre Limited Director • Scientist | 21 Dec 1991←33 Years→Current | Active | |
| Great Western Retail Sales Limited Director • Scientist | 21 Dec 1991←33 Years→Current | Active | |
| Great Western Restaurants Limited Director • Scientist | 3 Dec 1991←33 Years→Current | Active | |
| Didcot Railway Centre Limited Director • Scientist | 1 Jan 1970←55 Years→11 Oct 2025 | Active | |
| Great Western Retail Sales Limited Director • Scientist | 1 Jan 1970←55 Years→11 Oct 2025 | Active | |
| Great Western Restaurants Limited Director • Scientist | 1 Jan 1970←55 Years→11 Oct 2025 | Active | |
