+44-117-(4110000...4119999): Bristol, City of Bristol (BST) Read more about +44-117-(4110000...4119999)
+44-121-(3940000...3949999): Birmingham, Birmingham (BIR) Read more about +44-121-(3940000...3949999)
+44-1236-(352000...352999): Coatbridge, North Lanarkshire (NLK) Read more about +44-1236-(352000...352999)
+44-1294-(691000...691999): Ardrossan, North Ayrshire (NAY) Read more about +44-1294-(691000...691999)
+44-131-(2900000...2909999): Edinburgh, City of Edinburgh (EDH) Read more about +44-131-(2900000...2909999)