Santander UK has named Nathan Bostock as its new CEO, replacing Ana Patricia Botin- who has been promoted to chairwoman of the Santander Group following the death of her father, Emilio Botin.

In his new role, Bostock is expected to oversee an initial public offering (IPO) of Santander UK shares in London in the next two years.

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Bostock, who left RBS after two months on the job, returned to Santander to become Santander UK’s deputy CEO. He previously held various senior roles at Santander UK including CFO.

"I am delighted and honoured to be taking over a business that is in great shape. We have a clear strategy and a strong management team to deliver it," said Bostock.

Lord Burns, chairman of Santander UK, said: "Nathan’s appointment provides Santander UK with continuity of vision and strategy.

"He brings a strong understanding not just of Santander UK, having worked for us as an executive director up until 2009, but also of the wider UK banking industry, regulatory environment and economic climate," he added.

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Bostock joined RBS in 1992, before departing for Abbey National, which was later acquired by Santander, in 2001. In 2009, he left Santander to rejoin RBS as head of restructuring and risk.