Tesco Bank is the trading name of Tesco Personal Finance plc, a telephone and internet based commercial bank in the United Kingdom owned by Tesco, the UK's largest supermarket. Until 2008 it was a 50:50 joint venture between Tesco and the Royal Bank of Scotland, one of the UK's largest banks and remained under the Tesco Personal Finance plc (TPF) branding until 2010. Customers will gradually notice the phasing out of the TPF brand until mid to late 2011 when the rebranding will be complete. It is registered in Scotland at St Andrew Square, Edinburgh.