| Company | Timeline | Status | |
| Association For Industrial Archaeology Director • Retired | 11 Oct 2020←2 Years 10 Months→3 Sep 2023 | Active | |
| Council For British Archaeology(The) Director • Lecturer | 5 Jul 1993←1 Year→9 Jul 1994 | Active | |
| Association For Industrial Archaeology Director • Lecturer | 1 Oct 1992←17 Years→5 Sep 2010 | Active | |
| The Newcomen Society For The Study Of The History Of Engineering And Technology Director • Lecturer | 21 Nov 1991←1 Year 10 Months→13 Oct 1993 | Active | |
| The Newcomen Society For The Study Of The History Of Engineering And Technology Director • Unreported | 1 Jan 1970←23 Years→13 Oct 1993 | Active | |
