Tonight's episode features appearances from Taylor Swift and Tom Hiddleston, Sarah Lancashire, Keith Lemon, Rylan Clark and Robert Peston. Featuring the voices of top impressionists Jon Culshaw, Debra Stephenson, Lewis Macleod, Simon Greenall and Jess Robinson.

Bear Grylls hosts 'Publicity Island,' Theresa May wants a surprise birthday party, plus many more gags and spoofs.