Biggins, 73, won the show in 2007 after taking on challenges in the Australian camp, but has said he has turned down the chance for a second stint in the jungle.
He told The Mirror: “I wouldn’t want to risk losing my King of the Jungle title. I’ve done it and I loved it so it can only be disappointment. I am sticking with the good memories – and they were wonderful memories.
“I don’t think it is [the same]. You’ve got to move on and do other things.”
Biggins added that it had felt "special" to be crowned King of the Jungle from a public vote, and said he thought that the experience couldn't be topped.
ITV recently announced plans for All Star I'm A Celebrity which is due to take place at a new camp in South Africa in 2023, where favourite former contestants will be welcomed back for another shot at bug-infested challenges.
Read more: I'm A Celebrity - all the winners so far
The main series is set to return to Australia in November for the first time since 2019, with Gwrych Castle staff who hosted the show in North Wales during the coronavirus pandemic recently thanking ITV for the opportunity to be part of the series.
While Biggins ruled out a return to the jungle, he also blasted another new ITV acquisition - Big Brother, which is set to make a comeback on ITV2 in 2023.
The reality show originally aired on Channel 4 from 2000 and later Channel 5, before it was cancelled in 2018.
Biggins was removed from the celebrity version in 2016 after allegedly making an offensive comment and said that he thought the show's comeback should be cancelled.
He said: “I hated that show. Oh, it’s vile… I would never go near it.”
It isn't yet known whether the reboot will also see a return of Celebrity Big Brother.
Watch: ITV announces it's bringing back Big Brother