Tyrwhitt House, Oaklawn Road, Leatherhead
Watching brief by R Poulton of SCAU revealed evidence of past disturbance, but no finds or features of archaeological interest.
Watching brief undertaken by T Munnery of SCAU, and involving C Green of QUEST, during the installation of a pipeline, revealed an area of Late Upper Palaeolithic/Early Mesolithic and Late Mesolithic flintworking and the foundations of a Roman building. A subsequent excavation discovered that the Late Upper Palaeolithic/Early Mesolithic material was found to be an in-situ scatter of lithics with an eastern and western boundary and two areas with a low lithic density that could infer the positions of two knappers.