We have four copies of BAR 343 "Towards a Research Agenda for Welsh Archaeology", edited by Stephen Briggs. This is the proceedings from the conference in 2001, where it all began. Available for £18 each incl p&p, let me know if you would like one.
It's also available from Oxbow Books
http://www.oxbowbooks.com/oxbow/towards-a-research-agenda-for-welsh-archaeology.html