A woman uses an ATM at a Royal Bank of Scotland branch in the City of London
A woman uses an ATM at a Royal Bank of Scotland (RBS) branch in the City of London February 25, 2010. Royal Bank of Scotland posted the largest 2009 loss of its European peers but shrank from record-breaking levels, despite a sharp jump in bad debts which it says may now have peaked.

Shares in British banks were mixed on the FTSE 100 in morning trading ahead of this weekend's G20 meeting in Canada.

The meeting is likely to see world leaders discuss austerity programmes being adopted in many states across the globe, a sharp contrast to the emphasis on fiscal stimuli in previous meetings.

In addition today the Bank of England provided a framework for the regulatory system it believes necessary to reinvigorate the banking system and to prevent another financial crisis.

Later in the day shares are likely to be impacted by US figures showing the final estimate of first quarter GDP growth and consumer confidence.

By 11:12 shares in Lloyds Banking Group were down 1.67 per cent to 55.37 pence per share and Barclays shares dropped 1.11 per cent to 283.80 pence per share.

By contrast shares in RBS were up 0.35 per cent to 45.35 pence per share while HSBC shares increased 1.33 per cent to 645.54 pence per share.

Overall the FTSE 100 was down 0.60 per cent to 5,069.61.