+44-121-(2770000...2779999): Birmingham, Birmingham (BIR) Read more about +44-121-(2770000...2779999)
+44-121-(2800000...2809999): Birmingham, Birmingham (BIR) Read more about +44-121-(2800000...2809999)
+44-1223-(920000...920999): Cambridge, Cambridgeshire (CAM) Read more about +44-1223-(920000...920999)
+44-1225-(904000...904999): Bath, Bath and North East Somerset (BAS) Read more about +44-1225-(904000...904999)