CF30 Cardiff / Caerdydd Postcode district CF30: 1 named streets and 10 live postcodes, in Cardiff. Streets Mount Pleasant Lane, Cardiff / Caerdydd Postcodes CF30 0BH CF30 0DZ CF30 0EH CF30 0EY CF30 0FB CF30 0FD CF30 0FF CF30 0FG CF30 0FH CF30 0FR Source: ONS Postcode Directory (live postcodes only) and OS Open Linked Identifiers for the streets.