+44-121-(2920000...2929999): Birmingham, Birmingham (BIR) Read more about +44-121-(2920000...2929999)
+44-161-(9670000...9679999): Manchester, Manchester (MAN) Read more about +44-161-(9670000...9679999)
+44-20-(77890000...77899999): London, City of London (LND) Read more about +44-20-(77890000...77899999)
