Bradley and Barney Walsh host a revival of the competition show. In this round, the terrifyingly fast Apollo is unleashed, Sabre locks horns in a punishing Duel, and Legend sparks controversy in a no-holds-barred Hang Tough.

Bradley and Barney Walsh host the last round of the heats. With five brutal events and the dreaded Eliminator to conquer, only the toughest will secure one of the last places in the quarter-finals. There is controversy on Crash Course, Apollo returns to the Duel podium, and Mark Clattenburg gets a new and not so helpful assistant referee.