Sainsbury's Bank plc is a British bank wholly owned by Sainsbury's. The bank began trading on 19 February 1997 as a joint venture between Sainsbury's and Bank of Scotland. Sainsbury's took full ownership of the bank in January 2014. From Wikipedia
Having recouped £35bn of the £45.5bn rescue, the Treasury has cleared the way for full private ownership to fuel NatWest’s next phase of market expansion.