City workers cross London Bridge with the Swiss RE 'gherkin' building seen reflected in windows during the morning rush hour, in London April 11, 2011. Britain's top banks should shield their retail operations from riskier investment banking activities and hold more capital to protect taxpayers from any future financial crisis, a government-commissioned report said. British finance minister George Osborne said he welcomed the "excellent analysis" and findings of the commission led by former Bank of England interest rate setter John Vickers. REUTERS/Toby Melville (BRITAIN - Tags: BUSINESS)