+44-121-(0000000...0009999): Birmingham, Birmingham (BIR) Read more about +44-121-(0000000...0009999)
+44-121-(3300000...3309999): Birmingham, Birmingham (BIR) Read more about +44-121-(3300000...3309999)
+44-1223-(927000...927999): Cambridge, Cambridgeshire (CAM) Read more about +44-1223-(927000...927999)
+44-1225-(240000...249999): Bath, Bath and North East Somerset (BAS) Read more about +44-1225-(240000...249999)