Jack Whitehall is the first guest to partner David Walliams in the comedy sketch show. Featuring their take on Sherlock (2010), the world's worst dating show contestant and the launch of a cruel new reality TV show.

Harry Enfield joins David for a masterclass in sketch comedy. The pair play ageing Lotharios, spoof MasterChef, revive some of Harry's unused comic creations and The Queen takes part in Who Does One Think One Is?.

Star of stage and screen Sheridan Smith travels back to the 1970s with David to star in Carry On Up The Sexual Harassment Tribunal, ill-fated game show What's She Cross About? and turns into a real-life Barbie doll.

Meera Syal joins David in comedy sketches featuring some sadly disappointing 'pleasure robots' of the future and squabbling parents who use their daughter's Peppa Pig dolls to explain their marital problems.