The Anglo-Saxon settlement of Britain was the process, from the mid 5th to early 7th centuries, by which the coastal lowlands of Britain developed from a Romano-British to a Germanic culture following the Roman withdrawal in the early 5th century.The Anglo-Saxon settlement of Britain) was more complex than a mass invasion bringing fully formed lifestyles and beliefs. The early Anglo-Saxon, just like today's migrants, were probably riding different cultural identities. They brought from their homelands the traditions of their ancestors.