So You Think You're Funny 2012 winner Aisling Bea, The Last Leg's Josh Widdicombe and Alex Brooker, former Harry Potter actor Warwick Davis and Channel 4's very own `Chatty Man' Alan Carr are among the comedy stars taking part in the seventh annual Comedy Gala at London's O2 arena. Also taking to the stage this year are Charlie Baker, Kevin Bridges, Nathan Caton, Hal Cruttenden, Rob Beckett, Joel Dommett, Kerry Godliman, Lee Nelson, Russell Kane, Sean Lock, Shappi Khorsandi, Seann Walsh, Tom Allen and Zoe Lyons, along with musician Jake Bugg. As ever, all profits from ticket and DVD sales of Gala will go to Great Ormond Street Hospital Children's Charity