| Company | Timeline | Status | |
| Glamorgan-Gwent Archaeological Trust Limited (The) Secretary • Unreported | 16 Dec 1991←11 Years→26 Sep 2003 | Active | |
| Glamorgan-Gwent Archaeological Trust Limited (The) Secretary • Unreported | 1 Jan 1970←33 Years→26 Sep 2003 | Active | |
