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+44-117-(3710000...3719999): Bristol, City of Bristol (BST) Read more about +44-117-(3710000...3719999)
+44-121-(2610000...2619999): Birmingham, Birmingham (BIR) Read more about +44-121-(2610000...2619999)
+44-1229-(690000...699999): Barrow-in-Furness, Cumbria (CMA) Read more about +44-1229-(690000...699999)