+44-8451-(780000...789999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Read more about +44-8451-(780000...789999)
+44-8703-(470000...479999): Special Services higher rate: BT’s Standard National Call Retail Price for BT customers Read more about +44-8703-(470000...479999)
+44-8714-(390000...399999): Special Services higher rate: up to and including 10p for BT customers (non-internet) Read more about +44-8714-(390000...399999)
