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European Commission officials have estimated that “impaired assets” may amount to 44pc of EU bank balance sheets. The Commission estimates that so-called financial instruments in the ‘trading book’ total £12.3 trillion (13.7 trillion euros), equivalent to about 33pc of EU bank balance sheets.
In addition, so-called 'available for sale instruments' worth £4trillion (4.5 trillion euros), or 11pc of balance sheets, are also added by the Commission to arrive at the headline figure of £16.3 trillion.