SAS: Who Dares Wins' return to Channel 4 in January will see recruits take on what is being billed as the show's 'most savage' selection course yet.
Recruits will be thrust into what's been described as the deepest, most unforgiving jungle in the world, in Thung Ui, North Vietnam, to take on a version of the brutal SAS selection course.
Expert in jungle warfare Mark 'Billy' Billingham will take over the role of chief instructor from former United States Recon Marine Rudy Reyes in a series described by Channel 4 as "stunning on screen... hell on the ground".
Billy said: "I will not be accepting any excuses – this will be the toughest course to date."
The newly appointed chief instructor began his Armed Forces career in the jungle in Belize in 1984 and ended it in Brunei in 2008.
An advanced Jungle Warfare Instructor, his time spent in the jungle, from training to operational, including Malaysia, Indonesia, Belize, British Guiana, and Africa, is unparalleled.
On taking on his new role, Billy said: "Having been a DS on actual military SAS selection and Chief Instructor at the British Army Jungle Warfare Training School in Brunei, there is nobody better placed than myself to lead the recruits through this treacherous environment.
"I'm looking forward to challenging and encouraging the new recruits."
He will be joined by returning Directing Staff (DS) Jason 'Foxy' Fox, Rudy Reyes and brand new member of the DS team, Chris Oliver, a former Special Forces operator.
Throughout the six one-hour episodes, the new SAS: Who Dares Wins team will lead 20 civilian men and women through the punishing jungle phase of SAS selection – one of the toughest environments faced by Special Forces operatives.
Testing their mental and physical ability, by the end of the series, the recruits will discover who has what it takes to pass this unique version of the SAS selection course.
For former chief instructor Rudy, going to Vietnam to film SAS: Who Dares Wins, was an incredibly emotional homecoming.
He said: "My father was a US Marine who did multiple tours of duty in the Vietnam War and because of those scars inside and out I never knew him while he was alive.
"But I was born with his passion and energy to be a warrior and to go to the edge to find out if I have what it takes.
"It was an honour to work with the gracious Vietnamese people to bring the best SAS: Who Dares Wins series yet.
"And a humble honour to tread the harsh but beautiful jungles and rivers that my father did and, in a sense, meeting him in a warrior way, spiritually."
Who is the new DS Chris Oliver?
New Directing Staff Chris Oliver is a former Special Forces Operator and Royal Marine Mountain Leader, with 16 years of combat experience.
Chris joined the military at 16 and served within the elite Special Boat Service (SBS), alongside fellow DS Foxy.
He was deployed on operations to Sierra Leone, Northern Ireland, Oman, Iraq and Afghanistan, before leaving the military in 2015.
On being the newest member of the SAS: Who Dares Wins team, Chris said: "I will bring a hard-hitting intensity to the SAS: Who Dares Wins DS, being a fiery character with a very passionate approach to military training, with respect being at the forefront of everything I do.
"The values I intend to instil in the recruits, as part of the DS, have been forged on operations where we have lost good operators, so they had better be under no illusions – anyone who doesn't play by the rules will pay the price."
Sharing his thoughts on the new DS team and the next series of SAS: Who Dares Wins, Foxy commented: "Taking the course into the jungle, which is one of the most intimidating environments in the world, will make this one of the most intense and challenging courses yet.
"We've got Billy as chief instructor, which makes total sense for this course, as he has the most experience leading military operations and training in the jungle.
"I'd happily follow him into any situation.
"It's also great to have Chris on board as a brand-new DS.
"A man who I respect, having served with him before, he will bring an extra edge to an already very sharp blade."