The 'I'm A Celebrity... Get Me Out Of Here!' final peaked with 12.1 million viewers.
Dec Donnelly and Holly Willoughby
The finale of the popular ITV reality show - which was won by football manager Harry Redknapp - attracted the huge peak audience last night (09.12.18), which was the highest peak of the series, and a 10.9 million average.
Sunday's series conclusion saw an increase of 1.7 million viewers compared to last year's final, and the highest rating final since 2013.
Series 18 - co-hosted by Dec Donnelly and Holly Willoughby - has averaged 9.1 million viewers based on overnight ratings data, and according to consolidated data, the series averaged 12.2 million viewers, making it the highest rating season in the show's history.
The ITV show had a strong start with the series premiere pulling in 11 million viewers in overnight ratings - a higher viewing figure than Prince Harry and Meghan Markle's wedding broadcast.
On Sunday, millions gathered to watch Harry be crowned the new King of The Jungle during the finale, with Emily Atack taking second place and John Barrowman finishing third.
After winning, Harry revealed that he was surprised by how well he bonded with his campmates because he felt out of place in the group upon first impressions.
He said: "When I first came in, I looked and I thought, 'Oh my God, I'm in trouble here.' I looked at the group and I thought, they don't really know or are interested in anything I'm interested in.
"They're the most lovely people I've ever met, the whole group.
"There wasn't one person I could ever say one single bad word about. They were amazing. Without them, I would never have survived.
'Inbetweeners' star Emily said the football manager was "a worthy winner".
Tagged in Emily Atack Harry Redknapp