Contestants include singer Ricki, tennis coach Helen and neuroscientist-cum-greengrocer Liam.

Contestants return to compete for the ultimate title of series champion.

Richard Hammond dons his tuxedo and hands out awards for the fifth series.

Ten celebrities tackle the crazy purpose-built obstacle course in Buenos Aires.

Ten celebrities brave the infamous course in Buenos Aires in order to win £10,000 for charity.

Twenty Brits face a snowy obstacle course in the hope of getting to the Winter Wipeout Zone.

Twenty Brits vie on the winter course in Argentina hoping to qualify.

Twenty Brits face the Winter Wipeout course hoping to make it through to the Winter Wipeout Zone.

A former world-class athlete is among the contestants hoping to make it to the Winter Wipeout Zone.

Brave Brits travel halfway around the world to face ice and snow in Argentina.

Contestants range from a gravedigger to a pet detective and a whisky taster.