The festival was launched in 2006 at The Roundhouse in Camden as the popular music equivalent to the BBC's long-running classical Proms and has since played host to performances by the likes of Sir Paul McCartney, James Brown and Robbie Williams. But the 2010 event, which was rebranded as the Radio 2 Electric Proms to align it directly with the music station, and featured Sir Elton John, Robert Plant and Neil Diamond as headliners, has now turned out to be ...