Geoarchaeological evaluation by ArchaeoScape consisting of recording lithostratigraphy from three geotechnical boreholes and twelve geotechnical probe holes to provide a profile of sediment sequence, and assess the potential of the site for environmental evidence. The lower part of the sequence comprises sand and gravel of the Shepperton Gravel, a deposit widely recognised in the Middle Thames Valley and laid down at the end of the last glacial episode between c 20,000 and 10,000 years ago. Overlying the gravel are sand and silts representing deposition by the rivers Thames and Mole during the Holocene period. The lower part of this sediment is generally sandy and sometimes fossiliferous, and probably represents the early and middle part of the Holocene (c 10,000–5,500BP). The upper part is more silty and resembles the silty deposits widely present underlying the flood plains of rivers in lowland Britain and assigned to the post-Neolithic Holocene