The country's major banks are sitting on £40bn of undeclared losses that are stopping them lending to businesses and households, a report has claimed.
HSBC has "postponed indefinitely" plans to move its headquarters from London to Hong Kong, its chief executive said.
UK banking shares dragged the FTSE 100 lower this morning as sentiment struggled following J.P. Morgan's revelation that it lost $2bn in a trade which went awry.
HSBC has announced a fall in profits in the first three months of the year after the bank revalued its debt pile.
HSBC is to cut 2,000 jobs in the UK by the end of next year as part of its cost-cutting drive, according to reports.