Field walking in advance of gravel extraction, by Graham Hayman of SCAU for Greenham Construction Materials Ltd and Tarmac Roadstone Ltd, revealed concentrations of struck flint of Neolithic or Bronze Age date. A wide variety of tools was represented, including scrapers, awls, burins and arrowheads, and the presence of cores and hammerstones, as well as a large number of waste flakes, indicated that flint working was taking place in the vicinity.