All 12 celebrities who began the selection process remain on site. But as the pressure cooker environment builds, through a series of physical and mental tasks, several recruits question their place on the course.
After the recruits are asked to rank themselves from strongest to weakest, they are instructed to carry their 40kg bergens and 15kg sandbags to the first task, where they are pitted against each other in hand-to-hand combat.
TV personality Saira Khan soldiers on despite an injury as the recruits' decision-making skills are tested when they're forced to make a call on who to shoot and who to save in a hostage rescue task.
The staff pick up on TV personality Jake Quickenden's weaknesses and bring him in for questioning. Stories unfold about loss and grief and soon two recruits are heading home.
Celebrity SAS: Who Dares Wins continues Sundays at 9pm on Channel 4.