Flintshire taekwondo star Jade Jones has said she'd happily go back through the gruelling challenges of upcoming Channel 4 show Celebrity SAS: Who Dares Wins.

Speaking to the Leader ahead of the first episode of the show, which airs on Sunday, the 29-year-old Olympic gold medallist shared some spoiler-free memories from her experience in the Jordanian desert.

She said: "When my agent asked me if I wanted to do this show, my first instinct was - not really!

"It's known as the toughest show. I am a fighter, and when I am in the ring I am hard going, but when it comes to heights, going in water, jumping off things - I'm nervous.

The Leader: AJ mid-punch fighting Jade during a task. Image: Channel 4 AJ mid-punch fighting Jade during a task. Image: Channel 4

"But then I thought, it'll test me. So I decided to see how strong I was - and I loved every minute of it."

Jade said she and fellow competitors had to quarantine for a week or so before proceeding to the location of the challenges, in Jordan.

READ MORE: Sneak peek at Celebrity SAS: Who Dares Wins episode 1

"I was there for ten days with no phone and no contact with the outside world," she said.

"It was crazy hot during the day - we were literally in the desert in Jordan - but then it became really cold at night.

The Leader: Image: Channel 4 Image: Channel 4

"The show was probably harder than I thought it was going to be - it's definitely 100 per cent harder than it looks on TV.

"But I love working hard and training, so I loved it.

"I'd definitely go back in and do it again."

In photos released by Channel 4 ahead of Sunday's episode 1, Jade can be seen donning a gas mask ahead of a tear gas challenge, and then kneeling and regaining her breath afterwards.

The Leader: Jade after being gassed during a task, sitting on the floor. Image: Channel 4Jade after being gassed during a task, sitting on the floor. Image: Channel 4

"The tear gas challenge was nuts," she said.

"It was horrible - I couldn't open my eyes for five minutes and I literally couldn't talk.

READ MORE: 10-year anniversary of Jade Jones' London Olympic gold win

"But you get so wrapped up in it that you don't really see the camera people."

Speaking of her co-competitors, she added: "They were a really great bunch of people and we had an amazing bond."

Celebrity SAS: Who Dares Wins returns to Channel 4 on Sunday, September 4 at 9pm.