Existing customers
03457 404 404
Lines are open 8am to 10pm every day (except Christmas Day, Boxing Day and New Year's Day). Response times from this number differ from the average response times published.
Non-HSBC customers
03456 040 626
Lines are open 8am to 10pm every day (except Christmas Day, Boxing Day and New Year's Day). From outside the UK +44 1226 261 010.
Cysylltwch â'r Gwasanaeth Iaith Gymraeg
03457 030304
neu
03456 082400
Mae'r llinellau ar agor 8yb i 10yh bob dydd ac eithrio Dydd Nadolig, Gŵyl San Steffan a Dydd Calan. Mae'n bosib caiff galwadau eu harolygu a/neu recordio.