Arguably the most testing reality TV show, Who Dares Wins sees a group of amateurs put through SAS training exercises by instructor Ant Middleton.
Set against the backdrop of Scotland’s rugged northwest, the show has pushed contestants to breaking point in the past.
The celebrity edition has kicked off and it doesn’t look like Ant or his assistants will be going any easier on the pampered actors, models and dancers.
Where was Celebrity SAS: Who Dares Wins filmed?
Like the most recent series of the regular edition Celebrity SAS: Who Dares wins was filmed on the Isle of Raasay, just off the coast of the Isle of Skye.
As rugged as its better known neighbour, Raasay is home to a population of just 192.
Though its peaks don’t reach the heights of Skye’s Cuillin, the island is home to a number of distinct and rough pinnacles, including the 443 metre high Dun Caan.
The island is reached by ferry from Sconser on Skye and welcomes a regular flow of tourists during the summer months, with outdoor adventures often on the itineraries of visitors.
When is it on?
Celebrity SAS: Who Dares Wins airs every Monday night at 9pm on Channel 4.
Which celebrities are taking part?
The model, author and reality TV star formally known as Jordan.
Former professional boxer and WBC cruiserweight champion shouldn't have any difficulties with the physical element of the show.
The Only Way Is Essex star and reality show regular has already taken part in I’m A Celebrity Get Me Out Of Here.
A former Blue Peter presenter and GMTV favourite.
Also of Blue Peter fame Skelton now presents Digging Up Britain's Past and Countryfile.
Former Strictly star and professional ball dancer, Cole also appeared as a contestant on the first ever Love Island in 2006.
Former Aston Villa and Wimbledon centre-forward, Fashanu is now the host of Deal or No Deal Nigeria.
She played Candice on Coronation Street, but now holds the role of Maxine on Hollyoaks.
A vlogger and YouTuber, perhaps best known for being the brother of singer Conor Maynard.
Paralympic swimmer and paratriathlete who reached the semi-final of Strictly in 2018.
Rudimental DJ who is also known for his workout videos on Instagram.
Another DJ, this time on BBC Radio 1Xtra.