The dance troupe appeared on The Champions after Simon Cowell paid for spinal surgery for member Julia Carlile.
The 2011 winner returns for the Champions series on Saturday.
Simon Cowell is launching a new spin-off, which will crown the ultimate BGT winner.
Will Simon Cowell's overhaul of X Factor and BGT get us tuning in? Plus the team test their knowledge on this year's Strictly celebs and chat about who the real winner of Love Island is.
The rumour mill is in overdrive, but here's what we know so far.
Simon Cowell Praises Amanda Holden For 'Standing Up For Herself' Amid Phillip Schofield Feud Reports
The Britain's Got Talent judge and This Morning presenter are rumoured to have fallen out.
He said he was left “gobsmacked” and “traumatised" after producers threw him "many curveballs".
Illusionist X will also be competing in the final round of this year's series.
He wasn't prepared to be made a dummy of.
Cowell is in an incredibly privileged position – most of us need to invest more in education.