Morgan said he'd never subject himself to the 'hellish' environment of the ITV reality show.
McPartlin said the duo's hiatus in 2018 after his drink-driving conviction has only made their on-screen bond stronger.
From explosive new dramas to seriously tough quiz shows – there's a programme for everyone in the next three days.
The celebrity chef is under fire on Twitter after making a 'humiliating' remark about a woman's teeth.
The TV presenting duo have been friends for almost 30 years but have never celebrated Christmas together.
Likenesses of Ant and Dec appear to be a common sight now in the Welsh town of Abergele.
The animal charity said the show had incidences where animals had been killed 'for no other purpose than entertainment'.
The TV hosts have swapped early morning starts in the Australian jungle for night shoots in the spooky Welsh castle – heading home after midnight.
The 20th series of the show hit screens on Sunday under slightly different circumstances from usual, with contestants setting up camp in Wales rather than the Australian jungle.
The Geordie presenter made fun of campmate Hollie Arnold after she introduced herself as an 'MBE'.
The humorous video saw production censor the castle as Dec warned they weren't allowed to show it yet while Ant was keen to give fans an exclusive look.