Royal Bank of Scotland launched a campaign to transform itself from pariah to trusted British lender by slashing costs and repositioning itself as a UK-focused retail and commercial bank.

New chief executive Ross McEwan is under pressure to restore RBS’s reputation with the general public and its political masters after a torrid year of fines, customer complaints and technology problems.

“We are the least trusted bank in the least trusted sector in the marketplace,” McEwan told reporters yesterday. “Let’s be quite clear. We are too expensive, we are too bureaucratic and we need to change.”

The bank posted an £8.2 billion loss for 2013 due to restructuring costs and misconduct charges. RBS has lost a total of £46 billion since it was bailed out during the financial crisis in 2008, equivalent to the amount of money taxpayers poured into it.

RBS, 81 per cent owned by the government, is years away from moving into private ownership and needs to win over public and political opinion to smooth its path out of state control.

The government pushed out McEwan’s predecessor, Stephen Hester, last year partly because of his continuing commitment to the bank’s large investment banking franchise.

McEwan wants to simplify the bank, cutting its divisions from seven to three, reducing investment banking and shrinking its committees. He said the decision to focus the bank around three core areas – retail, commercial and corporate – and to concentrate 80 per cent of the bank’s assets in the UK, from 60 per cent currently, was not politically motivated.

“This is our plan. We own it,” he said. RBS is planning to cut costs by £5.3 billion, or 40 per cent, over the next three to four years, with £3.1 billion of that coming from the sale of businesses such as its US retail franchise Citizens and the rest from cutting overheads.

In the meantime, RBS warned that there would be “elevated” restructuring costs over the next two years to get the bank’s customer service up to scratch and its costs down.

The bank also said there would be a lag before RBS reaped the benefit of a UK economic recovery.

Analysts said it would take some time for investors to see the benefit of the restructuring.

“We see the strategic plan as setting out a realistic pathway to more sustainable earnings and a lower cost of equity,” Morgan Stanley analysts said in a note to clients.

RBS has become, as one parliamentarian put it this week, “the unacceptable face of British banking”. While taxpayers sit on a paper loss of around £14 billion from their bailout of the bank, it has continued to pay bumper bonuses. This year, RBS is paying out £576 million in staff bonuses for 2013, down 15 per cent on the year before.

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