+44-1279-(520000...529999): Bishops Stortford, Hertfordshire (HRT) Read more about +44-1279-(520000...529999)
+44-1280-(720000...729999): Buckingham, Buckinghamshire (BKM) Read more about +44-1280-(720000...729999)
+44-1283-(620000...629999): Burton-on-Trent, Staffordshire (STS) Read more about +44-1283-(620000...629999)
+44-1284-(300000...309999): Bury St Edmunds, Suffolk (SFK) Read more about +44-1284-(300000...309999)
