+44-115-(8200000...8209999): Nottingham, Nottingham (NGM) Read more about +44-115-(8200000...8209999)
+44-116-(2030000...2039999): Leicester, Leicestershire (LEC) Read more about +44-116-(2030000...2039999)
+44-121-(2190000...2199999): Birmingham, Birmingham (BIR) Read more about +44-121-(2190000...2199999)
+44-1254-(210000...219999): Blackburn, Blackburn with Darwen (BBD) Read more about +44-1254-(210000...219999)