as defined by administrative boundaries may not include suburban areas where an important proportion of the population working or studying in the city lives
some towns, cities, rivers etc. do have Brittonic or pre-Brittonic origins, becoming more frequent towards the west of Britain. "Britain BC: Life in Britain
[2020-04-25]. (原始内容存档于2016-08-22). Estimates of the population for the UK, England and Wales, Scotlandand Northern Ireland - Office for National Statistics