Recruits are pushed to tackle their fears head on in a 60m high forward abseil, while a brutal game of murderball on a black mud plain leaves one recruit with a near concussion.
Celebrities undertake a series of extreme tasks, including jumping backwards out of a helicopter and hand to hand combat, as they begin the challenge of completing the gruelling SAS selection course.
Contestants in this challenge must cook along with judge Andy, but with no recipe. The two cooks with the dishes closest to Andy's will win immunity from the next elimination.