+44-117-(2310000...2319999): Bristol, City of Bristol (BST) Read more about +44-117-(2310000...2319999)
+44-121-(6360000...6369999): Birmingham, Birmingham (BIR) Read more about +44-121-(6360000...6369999)
+44-1236-(261000...261999): Coatbridge, North Lanarkshire (NLK) Read more about +44-1236-(261000...261999)
+44-1280-(380000...389999): Buckingham, Buckinghamshire (BKM) Read more about +44-1280-(380000...389999)
+44-1283-(611000...611999): Burton-on-Trent, Staffordshire (STS) Read more about +44-1283-(611000...611999)