| Company | Timeline | Status | |
| The Learned Society Of Wales Director • University Professor | 22 Oct 2014←1 Year 9 Months→5 Aug 2016 | Active | |
| Council For British Archaeology(The) Director • University Lecturer | 5 Jul 1993←3 Years→30 Sep 1996 | Active | |
| Gwynedd Archaeological Trust Limited Director • University Lecturer | 30 Sep 1991←27 Years→11 Sep 2019 | Active | |
| Gwynedd Archaeological Trust Limited Director • Unreported | 1 Jan 1970←49 Years→11 Sep 2019 | Active | |
