Excavations just outside a large Late Bronze Age ringwork at Queen
Mary's Hospital, Carshalton, in the London Borough of Sutton, revealed a
settlement which was occupied possibly continuously from the Early Iron
Age into the early Romano-British period. Originally an open settlement,
by the Late Iron Age parts of it had been enclosed by an arrangement of
small ditches, which underwent some modification over the next two
centuries, while keeping their overall layout.