ITV said that the I'm A Celebrity final had a peak audience of 10.6 million last night, which was a 47% share of TV viewers.
The final show averaged 9.8 million, which was up 200,000 viewers on the audience for last year's final.
Overall series 12 of the show averaged 9.2 million viewers, making it the fourth most watched series ever, up on last year's series average of 8.9 million viewers, ITV said.
The X Factor drew a peak audience of 8.9 million viewers last night, and averaged 8 million viewers across the 90 minute show.
ITV1 said it was the most watched channel in prime time last night by more than a million viewers.
More top news
Charles Mack, 36, collapsed on the sideline after feeling unwell during the Cambridgeshire Cats session at Coldham’s Common on Sunday.
In the video, the lawyer shouts: "Your staff are speaking Spanish to customers when they should be speaking English... This is America!"
Jeremy Corbyn urged the PM to end “jackpot time for the privateers” in the NHS as he blamed outsourcing for denying cash to patient care.