Halifax is a commercial bank in the Unite Kingdom, one of the trading names of the Bank of Scotland plc which is part of the HBOS Group. Prior to 1997, it was the UK's largest building society, known as the Halifax Building Society. The Halifax is the UK's largest provider of residential mortgages and saving accounts. It is named after the town of Halifax, West Yorkshire where it retains its headquarters. Its slogan is "Always giving you extra".