This volume serves as an anchor in the Runnymede Research publication series. In reconstructing a substantial history of changing Holocene environment for the local catchment of the middle Thames valley, it provides context for the various phases of cultural activity on the Runnymede Bridge site (Surrey - formerly Berkshire). At the same time it sets out the evidence for the chronology of those phases in terms of stratigraphic position, archaeological comparanda and independent dating. The quantity of data relating to the two main phases of occupation, in the Middle Neolithic and late Bronze Age, is only summarized here, but material from other phases is given fuller attention.