The Comedy Gala returns for a third year as some of telly's best-known and most-loved comedy and music stars share the stage for this iconic charity event. Headlining this year's extravaganza - filmed at London's 02 Arena in aid of Great Ormond Street Hospital - is Jessie J, who opens the show with an exclusive live performance. The all-star line-up also includes Lee Evans, Michael McIntyre, Jonathan Ross, Micky Flanagan, Sean Lock, Kevin Bridges, Jo Brand, Jack Whitehall, Jack Dee, Jon Richardson, Seann Walsh, Lee Nelson, Josh Widdicombe, Paul Chowdhry, Andi Osho, Keith Lemon, Reginald D Hunter and Alan Carr.