Ayda and Robbie joined Simon Cowell as X Factor judges for the first time in 2018 along with Louis Tomlinson.
However, Robbie has announced the husband and wife team will not be coming back for another go at the ITV singing competition yet.
Robbie explained the reasons behind the decision in a post to Instagram.
He wrote to his 1.8m followers: “A quick update from Team Williams… it’s been a very busy year so far.
“Vegas has been incredible and we cannot wait for June and July to do it all again. I’ve got the massive @BSTHydePark show on July 14 and I’ve written the lyrics and music for the #RSCBoyInDress show with @guyachambers – opening on November 8.
“As well as all this we’ve got some very big announcements coming soon – but we can’t reveal all yet.
“Sadly though it’s impossible to do everything … and we’re gutted to tell you we won’t be able to return to The X Factor this year.
“We will, however, be working on projects with Simon going forward – and as huge fans of the show, we will still be tuning into The X Factor, voting and winding Simon up…x.”
The X Factor is expected to return to ITV later this year.