| Company | Timeline | Status | |
| The Gefrin Trust Director • Archaeologist (retired Univers | 7 Dec 2004←20 Years→Current | Active | |
| The Gefrin Trust Director • Archaeologist (retired Univers | 7 Dec 2004←18 Years→27 Apr 2023 | Active | |
Bede's World Director • Retired | 1 Jan 2002←9 Years→15 Dec 2011 | Dissolved | |
| Council For British Archaeology(The) Director • Retired | 19 Oct 1992←7 Years→30 Sep 2000 | Active | |
Bede's World Director • Retired | 10 Jan 1992←7 Years→13 Dec 1999 | Dissolved | |
| Council For British Archaeology(The) Director • Retired | 10 Jul 1991←1 Year→13 Jul 1992 | Active | |
| Friends Of Whitby Abbey Director • University Professor | 23 Apr 1991←6 Years→22 Apr 1997 | Active | |
