"© Licensed to London News Pictures. 23/04/2013. London, UK Mayor of London, Boris Johnson takes part in a Year 6 Class about St George's Day at Tidehall Academy in Deptford, South East London today 23rd April 2013. The class was taught by ""Outstanding Teacher"" Ed Wickstead. During the lesson Mr jOhnson wore a ""sound field"" device around his neck so his voice could be heard by the class. Photo credit : Stephen Simpson/LNP"
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