The ITV presenters revealed that the BBC Radio 1Xtra DJ, who is said to have previously turned down offers of £100,000 to star in the reality show, is their dream participant.
"Tim would be amazing. He's top of our list," Ant McPartlin said, reports the Daily Star.
"I know the producers have asked him a couple of times before and he has said no, but the thing is, eventually they all say yes. We just wear them down.
"There are so many people who don't know about Tim and this would bring him to a new audience."
Westwood previously revealed that he had been offered £50,000 to appear on fellow ITV1 show Dancing on Ice.
Meanwhile, Declan Donnelly went on to share his enthusiasm at the possible inclusion of A View to a Kill star Jones
"I did hear that Grace Jones is going in after her performance at the Queen's Diamond Jubilee Concert in June," he teased.
"Is she really 64? She'd be great in the jungle swinging that bamboo hoop around!"
The upcoming 12th series of I'm a Celebrity will air in November, with rumoured entrants including former MP Louise Mensch, Coronation Street's Ryan Thomas and Sylvester Stallone's ex-wife Brigitte Nielsen.