+44-117-(2600000...2609999): Bristol, City of Bristol (BST) Read more about +44-117-(2600000...2609999)
+44-121-(5180000...5189999): Birmingham, Birmingham (BIR) Read more about +44-121-(5180000...5189999)
+44-161-(7530000...7539999): Manchester, Manchester (MAN) Read more about +44-161-(7530000...7539999)
+44-20-(35210000...35219999): London, London, City of (LND) Read more about +44-20-(35210000...35219999)
