During the 1970s, the cinema became an unlikely home for London's emerging punk scene, hosting legendary gigs by the Sex Pistols, The Clash and the Buzzcocks. It was easy to imagine the crowds spilling out onto Upper Street after another unforgettable night, ears ringing and heads a little fuzzy the following morning. That's exactly where the name Hangover came from. It wasn't simply the name of the beer, but a playful tribute to the cinema's wonderfully rebellious past.