Michael McIntyre's Big Show

Rick Astley, Al Porter and Olly Murs perform on stage

The lively comedian invites singer-songwriter and internet sensation Rick Astley to perform his new single at London's Theatre Royal on Drury Lane. Also taking to the stage are rising Irish comedian Al Porter, and Olly Murs, who will surely be in safer territory singing to a live audience than he was in the first episode of this series, when Michael seized his mobile phone for Send To All, which this week features double gold medal-winning Olympic swimmer Rebecca Adlington. Plus, two very junior producers surprise their mother when they take over the show, and a trainee teacher receives the surprise of her life when she volunteers to help out at an art gallery, and ends up getting to live out her long-standing West End dream