+44-121-(2670000...2679999): Birmingham, Birmingham (BIR) Read more about +44-121-(2670000...2679999)
+44-161-(6680000...6689999): Manchester, Manchester (MAN) Read more about +44-161-(6680000...6689999)
+44-20-(80550000...80559999): London, London, City of (LND) Read more about +44-20-(80550000...80559999)
+44-8444-(830000...839999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8444-(830000...839999)
+44-8446-(020000...029999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8446-(020000...029999)
+44-8446-(130000...139999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8446-(130000...139999)
