| Company | Timeline | Status | |
| The Prehistoric Society Director • Archaeologist | 31 May 2001←4 Years→24 May 2006 | Converted/Closed | |
| Council For British Archaeology(The) Director • Archaeologist | 30 Sep 2000←2 Years 12 Months→28 Sep 2003 | Active | |
| The Prehistoric Society Director • Senior Research Office Oxford Archaeolog | 17 Aug 1992←8 Months→12 May 1993 | Converted/Closed | |
| The Prehistoric Society Secretary • Unreported | 17 Aug 1992←8 Months→12 May 1993 | Converted/Closed | |
