The group only made it fourth place on the show this year, but it seems they're on course for success.
Performing for thousands of fans at The Buttermarket nightclub in Shrewsbury, the fivesome found themselves in need of help after being stormed by groups of screaming teenage fans.
It sounds like hell to us.
An onlooker told the Shropshire Star this week: “It was amazing and I can’t stop shaking. Their voices are just amazing and they are good looking as well.”
Another added: “They were really, really good and they sounded really good live – I was a bit shocked. I didn’t expect them to be that good.”
Union J have signed a record deal with Sony Music after leaving the show, and are reportedly in talks to sign JLS' Ortise as their manager.
A source told The Sun newspaper today: “The boys had a massive wobble over Louis Walsh. Louis has management experience but Oritse has youth and the knowledge of being in their shoes on his side.
“People think Louis is past it for a band like this.”