CPAT was established in 1975 along with three other
Welsh Archaeological Trusts. It emerged from the ‘Rescue Archaeology Group’ (RAG) which was set up in 1970 by Chris Musson, who became the first Chief Executive of CPAT. The Trust undertook pioneering work on prehistoric sites in mid-Wales, beginning with the excavation of the
Breidden hillfort (Powys) which was being destroyed by quarrying. This was followed by the excavation of a late
Iron Age hillslope enclosure at Collfryn (Powys), which found evidence for intensive occupation and remodelling of the site, including round-houses and ‘four-poster’ structures that were probably granaries. CPAT has also undertaken extensive excavations of medieval sites such as
Offa's Dyke and
Hen Domen, near Montgomery. CPAT and the other
Welsh Archaeological Trusts were pioneers in developing
Historic Environment Records (HERs). In the 1970s Wales was the first part of the UK to develop a fully national system of what were then called ‘Sites and Monuments Records’; this fully computerised system was pioneered by Don Benson who was then Chief Executive of the
Dyfed Archaeological Trust. During the 1980s there had been good support from government for archaeology, including from
Cadw which had been established in 1984. However, with the decline of the
Manpower Services Commission funding models began to shift to a more ‘development driven’ model during this period. With the rise of planning-related archaeology in the 1990s CPAT evolved to develop commercial ‘contract’ archaeology services, whilst at the same time maintaining the HER, planning services and other public-facing project work. In the 2010s the main focus of CPAT's fieldwork moved away from large-scale thematic studies of Welsh monuments and landscapes, to more site-specific work undertaken as part of development-led projects. This has led to a wider portfolio of projects across Wales, and in adjacent areas of England. CPAT has also diversified funding and partnerships for public archaeology projects, including long-running and successful partnerships with the
National Trust and the
Clwydian Range and Dee Valley AONB. On 1 April 2024 the four Welsh Archaeological Trusts merged to create 'Heneb: the Trust for Welsh Archaeology'. The legal entity 'Heneb' was created by renaming of the Dyfed Archaeological Trust (DAT); it then subsumed the other three Trusts. As a result control of the merged organisation passed to the former Director of DAT, and then subsequently to a new CEO who had been appointed in February 2024. Therefore the role of Director of CPAT was made redundant. ==Operation and organisation==