According to Wikipedia, I know it isn't an entirely reliable source but it has been in some cases, the judge's houses guests are as below:

Simon Cowell: Cheryl
Nicole Scherzinger: Jess Glynne
Sharon Osbourne: Gary Barlow
Louis Walsh: Alesha Dixon

Fleur East is also expected to join Louis. If it's true, I'm really surprised Gary's back!

So uneventful if true.

Jess glynne, Fleur and Alesha

I love all 3 but what happened to Robbie doing it

Super hope the Gary part is true.
The rest of the amazing 2013 judges return so it's only fair to grant him a moment too!