Bewcastle is a large civil parish in the City of Carlisle district of Cumbria, England.According to the 2001 census the parish had a population of 411, reducing to 391 at the 2011 Census. The parish is large and includes the settlements of Roadhead, Shopford, Blackpool Gate, Roughsike and The Flatt. To the north the parish extends to the border with Scotland. As well as Bewcastle Castle this border area includes Askerton Castle.