The Office of Fair Trading (OFT) has announced a probe into parts of the investment banking industry.
Goldman Sachs and Morgan Stanley are believed to be among eight US banks facing an investigation into the rating of their mortgage products.
US authorities are investigating whether Morgan Stanley misled investors over mortgage derivatives, according to the Wall Street Journal.
Morgan Stanley has warned Germany could withdraw from the eurozone as the fallout from the Greek debt bailout continues.
Morgan Stanley has warned an $8.8bn property fund could face losses of up to $5.4bn.
Greece will this month launch a multibillion-dollar bond in the US, selling itself for the first time as an emerging market country as demand for its debt dwindles in Europe.
China could end its near two-year currency peg on the dollar as soon as next month, according to respected economist Professor Nouriel Roubini.
As regulators attempt to place more controls on short positions, analysis shows interest in UK banks is on the wane