Jonny Bairstow works through the leg side, England v South Africa, 3rd Investec Test, Lord's, 2nd day, August 17, 2012© Getty Images
Vernon Philander celebrates the wicket of Ian Bell, England v South Africa, 3rd Investec Test, Lord's, 2nd day, August 17, 2012© Getty Images
Ian Bell edged Vernon Philander to slip, England v South Africa, 3rd Investec Test, Lord's, 2nd day, August 17, 2012© Getty Images