Image caption Metro Bank chair Vernon Hill, pictured with dog Duffy, founded the bank in 2010

Metro Bank has said its plans to raise £350m to strengthen its finances are "well advanced" as it tries to quell questions over its financial health.

The bank's shares have plummeted around 75% since January when it announced it needed the money to boost its capital after an accounting error.

Reports have suggested the bank was struggling to raise the cash.

But Metro Bank said it was now in "final discussions" with shareholders and new investors over its plans.

"Feedback continues to be positive," it added.

The bank - which has 67 branches in London and the South East - said it expected to raise the cash by the end of June.

It said it would raise the money via a share placing, with additional shares created and offered to new and existing investors.

The bank revealed in January that it had underestimated the risk level of some of its commercial loans, meaning it didn't have the required shock-absorbing capital it needed to support a number of its business loans.

The funds it raises via its new share placing are aimed at making up for the shortfall.

The bank said the share sale had been underwritten by the banks arranging the sale.

In a separate move, Metro Bank is also considering selling the commercial loans affected by the accounting error.

Chief executive Craig Donaldson told the Financial Times it was an option, but stressed the bank had not made a final decision.

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Metro Bank opened its first branch in London's Holborn in 2010 in the wake of the financial crisis

It was the first High Street bank to open in the UK in more than 100 years

It is one of so-called challenger banks to the big High Street names, and opens seven days a week

Founder Vernon Hill shook up the US banking scene in 1973 when, aged 26, he founded Commerce Bank with one branch

When he sold Commerce Bank in 2007 for $8.5bn, it had 440 branches

Metro Bank has been under close supervision by regulator the Prudential Regulation Authority after the capital miscalculation.

The issue has also weighed heavily on its performance, with its recent results for the first three months of the year showing a sharp drop in pre-tax profit to £6.9m from £10m for the same period a year ago.

Chief executive Craig Donaldson said "adverse sentiment" has also impacted deposit growth, but said that 2019 would be "a year of transition" for the bank.

The bank was founded in 2010 by American Vernon Hill, becoming Britain's first new High Street bank for over 100 years.

Its unusual focus, in a world where most banks are drastically cutting back on branches, has been on building physical branches, which open earlier and longer than any of their rivals.