+44-1436-(320000...329999): Helensburgh, Argyll and Bute (AGB) Read more about +44-1436-(320000...329999)
+44-1438-(506000...506999): Stevenage, Hertfordshire (HRT) Read more about +44-1438-(506000...506999)
+44-1442-(906000...906999): Hemel Hempstead, Hertfordshire (HRT) Read more about +44-1442-(906000...906999)
+44-1494-(379000...379999): High Wycombe, Buckinghamshire (BKM) Read more about +44-1494-(379000...379999)
+44-1525-(575000...575999): Leighton Buzzard, Bedfordshire (BDF) Read more about +44-1525-(575000...575999)
+44-1536-(620000...620999): Kettering, Northamptonshire (NTH) Read more about +44-1536-(620000...620999)
+44-1577-(450000...459999): Kinross, Perth and Kinross (PKN) Read more about +44-1577-(450000...459999)