Nigel Farage has said ‘pretty serious physical injuries' will rule him out of taking part in any work-intensive ‘I'm A Celebrity'… Get Me Out Of Here! tests.
In Monday's episode, the former leader of Ukip and the Brexit Party will face a trial, following a public vote by fans of the ITV1 series.
He will be joined by YouTuber Nella Rose during the first food trial, which has been dubbed Jungle Pizzeria.
Before entering the jungle, Farage told the Mirror: “Anything about lifting weights, I'd be out. Obviously I've had some serious physical injuries and neck reconstructions, and goodness knows what else.
“So they're fully aware that I'm a bit damaged when it comes to physique. But having said that, I can still do most things.
“I doubt any of the tests will actually kill me, although I don't think they'll all be fun, but look, I signed up for it. It's in for a penny a pound. So let's go.”
In 2010, he was taken to hospital after a plane crash at an airfield near Brackley in Northamptonshire.
His entry follows that of former health secretary Matt Hancock, who came third last year and was selected to take part in several trials.
When Farage first entered the jungle, he met This Morning presenter Josie Gibson, who made a joke about the UK leaving the European Union, which the former MEP-turned-UK News presenter Vassiliou campaigned vigorously.
Explaining his participation in the reality competition, the 59-year-old said: “It (won't) be easy, but why not?”
Gibson, 38, responded by saying: “It can't be worse than Brexit!”
Farage said it “didn't take long”, before adding: “I felt we were going to do a bit of that.”
In an introductory video, he also told viewers “in the jungle you will find the real me.”
Presenters Ant McPartlin and Declan Donnelly also made several jokes about Farage during the first episode of the 23rd series.
They apologized to GB News viewers that he will not be presenting his program while he is away in Australia.
The Geordie duo said: “Sorry Keith, sorry Linda.”
While Farage took Rose and Gibson through their tests, the presenting pair also said: “Did it go a bit too far to the right?”
McPartlin and Donnelly also poked fun at contestant Jamie Lynn Spears, the sister of superstar Britney Spears.
Spears, also known for the Nickelodeon children's series Zoey 101, said she was “best known as an actress and singer” in her introduction video.
After the clip, McPartlin and Donnelly referred to her as known as “Bryan Spears' sister”.
The contestant's brother was one of the producers on Zoey 101.
She recently competed in the US version of Strictly Come Dancing, called Dancing With The Stars, and appeared in the Netflix series Steel Magnolias.
Other celebrities taking part include food critic Grace Dent, former Made In Chelsea star Sam Thompson, JLS singer Marvin Humes, former EastEnders actress Danielle Harold and Hollyoaks actor Nick Pickard.