+44-116-(0040000...0049999): Leicester, Leicestershire (LEC) Read more about +44-116-(0040000...0049999)
+44-121-(0040000...0049999): Birmingham, Birmingham (BIR) Read more about +44-121-(0040000...0049999)
+44-1254-(040000...049999): Blackburn, Blackburn with Darwen (BBD) Read more about +44-1254-(040000...049999)
+44-161-(0040000...0049999): Manchester, Manchester (MAN) Read more about +44-161-(0040000...0049999)
+44-20-(70280000...70289999): London, City of London (LND) Read more about +44-20-(70280000...70289999)