Masthaven will reduce and ultimately sell its long-term and short-term loan books and return all savings deposits to customers.

The bank said it has sufficient capital and liquidity to repay savings customers in an orderly fashion by the end of 2023, on or before contractual maturity dates.

Leigh Bartlett, chief executive of Masthaven Bank, said: “We have conducted a comprehensive strategic review of the business, with the support of specialist advisers, to consider how we could achieve our ambitions to grow the bank.

“We assessed a range of options, but all of them required a significant commitment of long-term capital and we have not been able to secure the level of investment necessary to grow the bank while serving our customers efficiently and effectively.

“I’m very proud of what the team has achieved in what is a very competitive UK banking market and I recognise this news will come as a shock and disappointment to colleagues, customers, intermediaries, and others.

“We will do everything we can to answer their questions and address their concerns over the coming weeks.

“I must stress that this was a strategic decision, and we are working to a detailed plan which will be implemented carefully over the next two years.”