Harry Clark

The fourteen new recruits face brutal conditions in Wales, the birthplace of the Special Forces. For their first task, the celebs must plunge into the freezing sea, swim to a rendezvous point and attempt to jump onto a moving speedboat.

The recruits go head-to-head in a terrifying hang-tough task 160 feet above a quarry, testing mental and physical strength. Then, they take on a car ambush task where they must drive into a simulated war zone.

The next phase of training for the celebrities begins as the recruits are woken by explosions in the dorm and the trainers shouting at them to get out. They must dress quickly, before facing an emergency water drill on a sinking boat.

Trust is essential in the Special Forces and is a key component of being an SAS soldier. The celebrity recruits undertake an insertion task, where they must jump from a moving boat onto a passing helicopter, before climbing up into the cabin.

Forced into a gassing task, the recruits need all their solidarity for a hostage rescue. Camaraderie is also vital as they climb multiple rock faces on an ammo supply mission.

The last recruits are handed over for interrogation as the trainers use psychological and physical pressure to break them and force a confession. Do any of the recruits have what it takes to pass?