Trustee Savings Bank clear ground rules on ownership and accountability, neither of which was clear under former legislation. Airdrie Savings Bank refused to join the single entity, and remained the only independent such bank in the UK until it announced its closure in 2017. In 1984, TSB adopted an advertising slogan by which it is still generally remembered today: "The Bank That Likes To Say Yes". In 1986, the Central Trustee Savings Bank Limited was renamed TSB England and Wales plc and Trustee Savings Bank plc was renamed TSB Scotland plc. In 1986, the shares of TSB Group plc were floated on the
The Sumitomo Bank era, including NEC and Panasonic (Matsushita). In the 1970s, it lost nearly $1 billion in the restructuring of Osaka-based general trading company Ataka & Co., which, combined with the contemporaneous bailout of Mazda, had a major impact on Sumitomo's finances, driving it down from the most profitable bank in Japan to being only ninth-ranked. However, the Ataka and Mazda bailouts enhanced Sumitomo's industry reputation by showing its dedication to customers. It became the largest Japanese bank by deposits until the merger of Dai-Ichi Bank and Nippon Kangyo Bank to form Dai-Ichi Kangyo Bank. In 1986, Sumitomo merged with Heiwa Sogo