The remaining celebrity recruits face a final, brutal challenge at the El Morado glacier, 3000 metres above sea level. A dozen celebrities started, but only a few have what it takes to complete the course.

Twelve celebrities, from Katie Price to Joey Essex, leave their glamorous homes to take on the SAS selection course, the toughest challenge of their lives. Who will pass this test?

For the series finale, the five remaining celebrities endure intense interrogation. The interrogators subject the exhausted and hungry recruits to punishing techniques as they attempt to unpick their cover story and reveal their true mission.

Chief instructor Ant Middleton and his directing staff put the celebrity recruits through a series of tests. One celebrity recruit collapses on a mountain and another is badly affected by the extreme cold, as they face brutal challenges.

In the second selection phase, the celebs face murderball, a brutal beasting, a backwards helicopter dive into near-freezing waters, and a few home truths.

Twelve celebs remain deep in the punishing environment of the Vietnamese jungle. Their trust in each other and themselves is tested in a task so gruelling that they start dropping like flies.

For the penultimate phase of the course it's survival of the fittest during a bout of pontoon wrestling. The remaining recruits are then ordered to head off into the jungle on a risky mission behind enemy lines.

The celebs face a punishing search operation through a series of rooms filled with CS gas. And they're tested under pressure during a rescue mission when they're tasked with extracting two of their fellow recruits who've been taken hostage.

The celebs first climb up a 200-foot cave, and abseil back down again. The second task is murderball: a serious test of physical strength and aggression. Finally, the recruits must write a 'death letter' to their loved ones.

From the recruits' very first challenge - a terrifying backwards dive out of a helicopter - Ant Middleton and his team are determined to show there will be no allowances made. Later, the celebrities have to overcome more fears.

As the pressure is piled on, one recruit cracks and a bad decision puts another's place on the course in dire jeopardy. After being pursued through the Chilean countryside by a military hunter force, the recruits enter the interrogation phase.

As the climax of the current series, the last six celebs go through 48 hours of torture for the interrogation phase. Only the physically and mentally elite will make it to the end.

The last seven celebs face the final brutal phase with a punishing interrogation with ice baths and burial to force a confession. Will they crack or make it through to the end?

The celebrities are paired up to prove that they're team players, and must put their lives in each other's hands, in a terrifying free fall abseil. They must leave their celebrity world behind and learn to trust their partner to keep their place.

The recruits face a killer 48 hours primed to expose the weakest members - including a beach beasting in near-freezing water and a gruelling race across mountainous terrain.

The remaining celebs face a punishing race across land and ocean before they plunge into an overnight pursuit by an elite hunter force across the Scottish Inner Hebrides.

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.

16 celebrity recruits are pushed to their limit in the unforgiving Vietnamese jungle. The new recruits must first traverse parallel metal bars suspended 50 feet above the ground. Then they must fight against each other in the rawest form of combat.

The spotlight focuses on the Special Forces' high levels of discipline. In the first task, a terrifying feat tests the celebrities both mentally and physically as they race in a forward abseil down a 300-ft working dam. Then, under cover of darkness, the recruits must perform one of the most feared tasks - the backwards dive. Will the celebrity recruits conduct themselves in the manner required?

After a plunge in freezing mountain water the celebs must take on the Redman.

The celebs are ambushed as they battle to complete the course.

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.

The recruits are put in pairs to eat, sleep and work as a duo, including a 60-metre cliff drop together. Can leaders Joey Essex and Lauren Steadman do teamwork or are they at risk?

The celebs are paired with an 'oppo' for support. But then they have to fight each other.

The recruits must protect a VIP on a journey through the wilderness.