Borough of Berwick-upon-Tweed Borough of Berwick-upon-Tweed Berwick-upon-Tweed was a local government district and borough in Northumberland in the north-east of England, on the border with Scotland. The district had a resident population of 25,949 according to the 2001 census, which also notes that it is the most ethnically homogeneous in the country, with 99.6% of the population recording themselves in the 2001 census as "White". It was also the smallest district in England with borough status, and the third-least densely populated local government district (after Eden and Tynedale). Its main town is Berwick-upon-Tweed, sited immediately to the north of the Tweed estuary. The
Sussex in the High Middle Ages Essex and Kent, Sussex received some of the most migrants from what is now France after the Norman conquest. Sussex's population in 1086 has been estimated at about 66,000, doubling to 123,000 by 1290. In the High Middle Ages, the Sussex coast was one of the most densely populated parts of England. At the time of the Domesday Book in 1086 coastal Sussex and parts of Suffolk and Norfolk were the only parts of England to record a population density of 20 people per square mile, twice the average for England. Coastal Sussex remained amongst the most densely populated areas