Actor John Barrowman, football manager Harry Redknapp and X Factor runner-up Fleur East are heading to the jungle for this year's I'm A Celebrity... Get Me Out Of Here!
They are among 10 stars who will undertake challenges in the Australian jungle for up to three weeks.
Noel Edmonds is also in the line-up, according to The Sun - though ITV would not confirm his involvement.
The 2018 show kicks off on 18 November at 21:00 GMT.
Holly Willoughby will co-host with Declan Donnelly, while Ant McPartlin takes a break from TV presenting.
Speaking ahead of venturing into the jungle, Redknapp said he had never watched the programme before.
"There's nothing tougher than being a manager of a football team when things aren't going well," the 71-year-old said.
"You feel responsible, however many people support your team every week. The buck stops with you. You haven't got many friends when it's not going well as a football manager.
"So no, I don't think doing this will be tougher."
Singer Fleur East, runner-up on The X Factor in 2014, said she was terrified of the challenges she might face on Australia's Gold Coast.
"I am scared of everything you have in there and I am scared of all the trials," said the 31-year-old.
Malique Thompson-Dwyer - aka Prince McQueen on Hollyoaks - also admitted to some trepidation.
"For me eating testicles is going to be the worst," said the 20-year-old actor. "I am quite picky with my food so that's going to be hard."
DIY SOS presenter Knowles said he does not have any phobias, so being in the jungle "shouldn't hold too many problems".
Former Doctor Who star Barrowman, meanwhile, said he was looking forward to "losing his love handles".
Former EastEnders actress Rita Simons, though, had a warning for her fellow contestants.
"I do have really horrendous snoring," confessed the 41-year-old, whose uncle is Lord Alan Sugar of The Apprentice fame. "It's not fun for other people."
About 10 million people tune in to the show every night.
Here is the full line-up:
- Harry Redknapp - football manager
- Sair Khan - plays Alya Nazir on Coronation Street
- Nick Knowles - TV presenter
- Fleur East - singer and X Factor runner-up
- Rita Simons - actor, played Roxy Mitchell in EastEnders
- James McVey - guitarist and singer for The Vamps
- Anne Hegerty - 'The Governess' from The Chase
- Malique Thompson-Dwyer - plays Prince McQueen in Hollyoaks
- Emily Atack - comedy actor, played Charlotte Hinchcliffe in The Inbetweeners
- John Barrowman - actor and entertainer
Now in its 18th series, this will be the first time presenter McPartlin will be absent.
Earlier this year McPartlin was fined £86,000 and given a 20-month driving ban after admitting driving while drunk.
The 42-year-old later confirmed he would not return to TV presenting until 2019.
Ant and Dec have co-presented the programme in the Australian jungle since it began in 2002.