Wes Nelson

The celebs do pair work as they descend 100 feet down a rock face, force march and carry a 40kg fuel drum over rough terrain. By the end of all this, some will be heading home.

Twelve celebrities head out for the wilds of the Scottish Hebrides for a series of full-on challenges in a gruelling version of the SAS selection, including an aerial assault course.

The 12 celebrities take on hand-to-hand combat, then put their wits to the test in a hostage rescue mission. With tension mounting, two of the recruits are soon heading home.

Jimmy Carr hosts as Rob Beckett and Tom Allen are joined by Scarlett Moffatt, Harriet Kemsley, Wes Nelson and Rosie Jones to compete in the comedy panel show.

Only five celeb recruits remain, and they're about to be sent on the run on an escape and evasion mission. To break them down physically and mentally before this final stage, the Directing Staff (DS) push the recruits hard with two gruelling tasks.

The celebs engage in hand-to-hand combat against the directing staff, run down a 50-metre pillar and go diving for essential supplies. Meanwhile, one recruit is medically withdrawn.