The 'I Predict A Riot' singer will replace Danny O'Donoghue of The Script who pulled out of the singing competition earlier this year.
A show insider told The Sun: “We’ve got pop, dance, rap and traditional stuff covered with the three we’ve already got.
“So there was a bit of a hole for a rocker. Danny filled that role for the first two years and now it will be Ricky’s turn.
“He’s outspoken, cares passionately about the music scene and basically has some balls.”
Last week it was announced that 'Big Brother' host Emma Willis will be replacing Holly Willoughby as the main presenter of the show when it returns to BBC1 in January. She'll be joined on co-hosting duties by JLS star Marvin Humes who will replace Reggie Yates.