This report describes the results of the evaluations and excavations of the new A34/M4 interchange at Chieveley, West Berksire, England, and discusses the combined evidence from superficial and subsurface finds. It is concluded that there was a significant intensification of activity in the area starting in the Middle Bronze Age following a sporadic earlier prehistoric presence. This continued into the Late Bronze Age. The lack of Iron Age material is noted and there seems to have been a re-intensification of occupation in the late Iron Age or early Roman periods. The few early-middle Saxon pits were divorced from a settlement context and remain enigmatic.