The I’m A Celebrity... Get Me Out Of Here! castle had heating lamps hidden in the ceiling, it has been revealed.

Strictly Come Dancing star AJ Pritchard, 26, appeared topless on the show and has now admitted that Gwrych Castle in north Wales, where the ITV reality show was filmed this year, had heaters installed.

Speaking on his AJ vs Curtis podcast, the dancer told his brother Curtis Pritchard: "Okay so, we had heat lamps above.

“You probably couldn't see this on camera. The heat lamps would maybe turn on at about 2am and about maybe 5am to make it warm in the sleeping areas.

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“One night I went to bed thinking I was going to be absolutely freezing [so] I put on a million layers. I woke up, I had a hot flush at 4 or 5am, I had to take all my clothes off!”

AJ admitted the heating made the show – which is usually filmed in the Australian jungle – easier for the celebrity contestants.

He said: “I thought we were going to be outside in the sticks in tents. So when I got inside and saw the beds and roof over our heads I thought, ‘This is too easy.’”

But he added: “I was cold, I always had my long johns on.”

And fellow contestant Vernon Kay said the campmates were cold during their three-week stay in the ruined castle.

He told This Morning: "There was one heater in my living quarters but they were very rarely used, I'll be honest with you. It was cold at night.

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"It was freezing during the day because the draft from the door that went into the courtyard that sometimes remained open. So the draft would come sweeping through.”

He added: "The heat that we got was very limited."

I’m A Celebrity, now in its 20th series, is based on the concept of celebrities giving up their luxury lifestyle and slumming it in basic living conditions as well as enduring torturous trials to win food rations.

This year’s show was won by Giovanna Fletcher, author and wife of McFly’s Tom Fletcher.

Watch: Giovanna Fletcher crowned winner of I’m A Celebrity 2020