As a special treat for the fans, Rob and Romesh will be attempting a challenge set by you at home. Rob has asked his Instagram followers, what they'd like to see them do next, and so, following the responses, this year we'll be finding out who's The Greatest Showman, as our favourite double act will be joining the circus. They'll be teaming up with West End and Big Top show - Zippo's - where the boys will be learning acrobatics, contortion and knife throwing, all ahead of their final Christmas performance at the world's best destination for festive fun - Winter Wonderland.