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The toughest obstacle course on telly is back and this time it’s nastier than ever.

With new challenges that test even the fittest and fastest to their limit, there’s not many who have what it takes to make it up the Warped Wall.

Throughout the series there are also celebrity contestants, tonight including Marvin Humes, husband of presenter Rochelle, and ex-TOWIE star Lydia Bright.

Just to up the ante a bit more, the winners of the last three series, Tim, Owen and Jonny, are also back to see how they fare.

Finally, watch out for amputee Martin, who is an absolute hero.