Edited sentence: "Rewind eight months and the name Tinchy Stryder would have been met with blank expressions by all but a core of grime fanatics in East London.Building on the momentum of his recent chart-topper 'Number One', Stryder's back with summer smash-in-waiting 'Never Leave You'.Now, having bypassed the critics and trend-setters, the 22-year-old rapper has become one of the year's biggest success stories thanks to a winning combination of pop hooks and hip-hop rhymes