+44-8454-(650000...659999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Read more about +44-8454-(650000...659999)
+44-8708-(670000...679999): Special Services higher rate: BT’s Standard National Call Retail Price for BT customers Read more about +44-8708-(670000...679999)
+44-8714-(210000...219999): Special Services higher rate: up to and including 10p for BT customers (non-internet) Read more about +44-8714-(210000...219999)
