+44-1279-(520000...529999): Bishops Stortford, Hertfordshire (HRT) Loe lähemalt +44-1279-(520000...529999) kohta
+44-1280-(720000...729999): Buckingham, Buckinghamshire (BKM) Loe lähemalt +44-1280-(720000...729999) kohta
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+44-1284-(300000...309999): Bury St Edmunds, Suffolk (SFK) Loe lähemalt +44-1284-(300000...309999) kohta