Note 10 — Chapter II · THE FORMATION OF THE KINGDOM OF ENGLAND. 449–975.
Reading edition
It seems certain that the English seldom occupied a Roman or British town at once. The towns were commonly forsaken for a while, though they were in many cases resettled by an English population. The only question is whether any of the towns preserved a sort of half independence after the conquest of the surrounding country. See Comparative Politics, 130, 422.