Alex Jones presents the semi-final of Tumble. The remaining celebrities and their professional partners perform a brand new floor routine before the celebrities go it alone to take on the nerve-wracking parallel bars or the beam. For the first time in the series the public can vote to save their favourites. Olympic legends Nadia Comaneci, Louis Smith and their fellow judges keep a close eye on the twists, turns and tumbles. To top it off, Tumble's own judge Sebastien Stella takes to the air with a very special one-off aerial routine.