We are very grateful to the John Fell Fund (University of Oxford) for funding this pilot project and to numerous people in the heritage and commercial sectors for providing data and advice, including Jan Wills and Tim Grubb (Gloucestershire County Council), Melanie Pomeroy-Kellinger and Faye Glover (Wiltshire Council), Paul Booth and Gary Jones (Oxford Archaeology), Steve Ford (Thames Valley Archaeological Services), Simon Cox (Cotswold Archaeology), and Scott Williams (Archaeological Research Services). We also would like to thank Oxford Archaeology, Thames Valley Archaeological Services, Archaeological Research Services and Cotswold Archaeology for their assistance and for allowing us to reproduce material (site plans etc.).