The UK's major banks are exposed to multi-milllion pound fines and lawsuits that could dent their profits, the rating's agency Moody's warned on Tuesday, as it downgraded its outlook for the sector because of new rules intended to prevent another taxpayer bailout.
France's biggest bank, BNP Paribas, has been threatened with a downgrade to its credit rating as it braces for a potential $10bn (£6bn) fine from US regulators for busting sanctions.
Royal Bank of Scotland has been warned that it faced a potential downgrade by the credit rating agency Moody's which is concerned that last month's profits warning may have weakened its financial strength.
Credit rating agency Standard & Poor's incited the ire of European Union officials on Friday when it snatched away the region's top AAA rating, citing tensions between member states and a deterioration in their overall financial health.
The ratings agency Standard & Poor's is considering lifting its threat to Britain's AAA credit rating in a boost to the chancellor George Osborne ahead of Thursday's autumn statement.
The government shutdown has so far cost the US economy $24bn – or $1.5bn a day, ratings agency Standard & Poor’s said on Wednesday.
Standard & Poor's has accused the US Justice Department of filing its $5bn lawsuit against the ratings agency in retaliation for the company's downgrade of America's debt in 2011.
For the first time since the 2008 financial crisis the ratings agency Moody's regards the outlook for the banking sector as being on a stable footing.
An Italian judge has rejected an order to seize around $2.29bn of assets from Nomura as part of a probe into suspected fraud involving troubled lender Monte dei Paschi di Siena, legal sources said on Saturday.