+44-115-(7410000...7419999): Nottingham, Nottingham (NGM) Read more about +44-115-(7410000...7419999)
+44-116-(4150000...4159999): Leicester, Leicestershire (LEC) Read more about +44-116-(4150000...4159999)
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+44-121-(4040000...4049999): Birmingham, Birmingham (BIR) Read more about +44-121-(4040000...4049999)
+44-1254-(455000...455999): Blackburn, Blackburn with Darwen (BBD) Read more about +44-1254-(455000...455999)