+44-115-(7540000...7549999): Nottingham, Nottingham (NGM) Read more about +44-115-(7540000...7549999)
+44-116-(4260000...4269999): Leicester, Leicestershire (LEC) Read more about +44-116-(4260000...4269999)
+44-117-(2760000...2769999): Bristol, City of Bristol (BST) Read more about +44-117-(2760000...2769999)
+44-121-(5790000...5799999): Birmingham, Birmingham (BIR) Read more about +44-121-(5790000...5799999)
+44-1223-(958000...958999): Cambridge, Cambridgeshire (CAM) Read more about +44-1223-(958000...958999)
+44-1225-(281000...281999): Bath, Bath and North East Somerset (BAS) Read more about +44-1225-(281000...281999)