Report on an archaeological watching brief carried out during the preparation for the construction of a new storm water detention tank and attendant works at Kingsmead Coach Park, Canterbury. The excavations revealed a considerable depth of overburden overlying river terrace gravels and alluvial clays possibly derived from a medieval flooding event. Few finds were recovered from the watching brief, however, ceramic building material (CBM) such as bricks and tiles of medieval and possibly Roman date were recovered from samples from the riverine deposits and a large post-medieval milestone was encountered within overburden contexts.