Ten top UK comedians face off in Jimmy Carr's challenge: make others laugh while keeping a straight face; they must try everything to crack their opponents, but must never break themselves.

Igrajo Roisin Conaty, Daisy May Cooper, Joe Wilkinson

Ten top UK comedians face off in Jimmy Carr's challenge: make others laugh while keeping a straight face; they must try everything to crack their opponents, but must never break themselves.