Calum Best

A dozen famous faces raise money for charity by undergoing a training course in harsh conditions designed to replicate British Army Special Air Service selection.

The recruits compete to survive in three brutal challenges, testing their leadership skills; both teams must construct a zipline and get their equipment across a body of water without it getting wet.

Will Calum Best's date with the current Ms Great Britain crash and burn when his ex comes a calling? And Gothy Kendoll's date is put under pressure by her ex!

The celebrities face a series of tasks that will test their resilience to its limits; in searing heat, they must push a one-ton, broken-down Jeep through thick sand in teams led by sibling rivals Curtis and AJ Pritchard.

With hand-to-hand combat and split-second decisions about whether to shoot in a simulated war zone, recruits are pushed to their mental limits; Shannon Courtney comes face to face with her anger issues and Ferne McCann confronts her fear of the dark.

When recruits jump from a helicopter in pairs, Pete Wicks is knocked unconscious, before recovering and swimming back to shore; they then take the lives of their teammates in their hands as one freefalls from a 150-foot cliff.