It is widely accepted that between the beginning of the Early Neolithic period and the end of the Early Bronze Age different regions of Britain were connected to one another by sea, but little is known about the nature of maritime contacts before plank-built boats developed during the 2nd millennium bc. This paper considers a series of coastal sites, some of which were first settled from Mesolithic times. From the early 4th millennium they were also associated with artefact production and the use of imported objects and raw materials. Their distribution focuses on the region of isostatic uplift in northern Britain where the ancient shoreline still survives. It is considered in relation to a new model of coastal change which suggests that these locations were characterised by natural havens sheltered behind islands or bars. The sites can be compared with the ‘landing places’ and ‘beach markets’ discussed by historical archaeologists in recent years.