+44-121-(7400000...7409999): Birmingham, Birmingham (BIR) Read more about +44-121-(7400000...7409999)
+44-1223-(795000...795999): Cambridge, Cambridgeshire (CAM) Read more about +44-1223-(795000...795999)
+44-1225-(634000...634999): Bath, Bath and North East Somerset (BAS) Read more about +44-1225-(634000...634999)