<p><br /> Electronic trio The xx have bagged the coveted Mercury Prize.<br /> </p><p><br /> The group from south London won the award at a plush ceremony in Mayfair, London for their debut album xx.<br /> </p><p><br /> Singer Romy Madley Croft said they were in shock: "I genuinely wasn't expecting to hear our name, genuinely, genuinely not."<br /> </p><p><br /> Past winner Dizzee Rascal and the Modfather Paul Weller had been the bookies favourites.<br /> </p><p><br /> The childhood pals follow in the footsteps of acts like Klaxons, Arctic Monkeys, Elbow.<br /> </p>