The 'Medal Heads' - made up of Team GB Olympians Tessa Sanderson, Sharron Davies, Iwan Thomas, Kriss Akabusi and Jade Johnson - try their luck.
This week it's the turn of 'The Junglist Massive' - AKA former I'm A Celebrity...Get Me Out Of Here! stars Tony Blackburn, Christopher Biggins, Joe Pasquale, Martin Roberts and Kim Woodburn. They've battled through Bushtucker trials and survived the great outdoors, but can their star power conquer the tower?
Do John Sergeant, Edwina Currie, George Galloway, Ann Widdecombe and Lembit Opik have what it takes to conquer the Tenable Tower?