It’s almost 10 years since Jason Fox parked up in a cliff-top car park, on the brink of ending his own life.

“I was having a nightmare of a day – couldn’t see the purpose of anything, work wasn’t good, I’d had a massive argument, and just felt ‘What’s the point?’,” he recalls.

“I’d been in the military for 20 years. I used to be awesome at something, and without that I felt maybe my usefulness on the planet was over.”

During that 20-year career in the Marines and Special Forces, Jason experienced ‘high intensity warfare’ and saw colleagues killed and injured on a regular basis.

But he’d lost his ‘military mojo’, and after countless therapy sessions, he came to accept that a diagnosis of PTSD and medical discharge was the ‘least worst’ option.

Thrust back into civilian life at the age of 36, for the first time since leaving school, the mundanity of everyday living – booking dentist appointments, filing tax returns, living full time with a partner – was a bigger challenge than the life he’d known.

Without the brotherhood and support network provided by the military way of life, Jason struggled to find a new identity and that struggle led him to that clifftop.

“Looking back, I don’t know what stopped me,” he said. “But I guess I just wasn’t quite ready to give up.

“I had a word with myself, realised things had to change and that moment of honesty was a real defining moment.”

From there, Jason ‘got rid of negativity’ in his life, and ‘went on a journey to find the right people’ to help him move forwards.

Messenger Newspapers: Jason Fox on SAS: Who Dares Wins

Fighting back from the brink, Foxy found a new purpose and drive – partly through founding his mental health charity and partly through his TV career after being approached as one of the experts for SAS: Who Dares Wins, a show he’s been with since it launched in 2015.

“Initially, SAS: Who Dares Wins was a bit of an experiment – no one knew if or how it would work, or how people taking part would respond to it,” he said.

“It’s been phenomenal to see how both civilians and celebrities have thrown themselves into the show over the years. I am surprised at how big it’s become, and very proud of it too.

“What’s also been surprising is what I’ve learned from the experience – not to judge people, to give people another chance.

“And it does help to fill the ‘gap’ left from military life. When we’re out filming, there’s a team of people all working together to get a job done under some tough conditions.

“It’s nothing like as tough as I was used to in the Special Forces, but we are still working 24-hour days in extreme environments, pulling together, challenging ourselves.”

That’s something of an understatement when you consider some of Foxy’s anecdotes… Having a pistol held to his head by Pablo Escobar’s personal hitman, helicopter crashes in unnamed warzones, or gun battles where the 30-strong squad is surrounded by 200-plus enemy fighters.

Like many young men, Foxy reached the end of his school life and found his way into the military. His dad was an ex-Marine, so it had always been a part of his life and he knew the option was there.

Raised on a 1980s council estate in Luton, teenage Foxy was leaning towards the wrong side of the tracks and recognised he needed to make some changes.

Enlisting after his GCSEs seemed a fairly obvious choice.

“I hated school and wanted to leave home, and the quickest way to do that was to enlist. I just wanted to see more of the world,” he said.

The 90s were a ‘reasonably quiet’ time for the Marines, but that quiet time made him realise it was the action of soldiering – ‘being like a kid running around in the dirt’ was what Jason enjoyed. Less so the ‘parading, the pomp and ceremony’.

So a chance to join Special Forces came at the perfect time – as they’re often in active service, even in peacetime.

Jason had not long completed the rigorous selection process for the Special Forces when September 11, 2001 came along. Nothing could have prepared the world for that moment, but Jason was at least in peak mental and physical fitness for the challenges to come.

“I remember seeing the attack on the Twin Towers on TV,” he said. “When it transpired what happened, we knew what would happen next.

“It was a turning point in the public relationship with and awareness of Special Forces operations – they became mainstream news, having always been very much undercover. Stuff I was doing would be in the newspapers, on the front pages, that had never happened before.”

Rising to the rank of Sergeant, Foxy was respected and well regarded as being generally indestructible, making his PTSD diagnosis and medical discharge all the more surprising to those around him.

But, in fairly typical style, once he found some answers through therapy, Jason turned those experiences to his advantage in supporting others – and his openness in speaking about mental health issues in the forces and after.

That candid approach has helped forge his popularity, and he brings those experiences to Life At The Limit.

“Touring Life At The Limit last year was something completely alien to me and I absolutely loved it so I can’t wait to get back on the road,” said Jason.

“I’ve had some incredible experiences – some good, some bad – and I genuinely feel honoured that people want to hear about them.”

Life at the Limit, The Lowry, Salford Quays, Thursday, January 26. Details from www.thelowry.com