JLS have called on Simon Cowell to rejoin the UK X Factor.

The show's supremo and former judge left the series after its 2010 run to join up with the US edition of the reality show, where he sits alongside the likes of Britney Spears.

He has been tipped to make some sort of appearance on this year's UK series but JLS - who came runners up on the show in 2008 - told Digital Spy that he should make a definite return.

Marvin Humes said: "He has to return, definitely. He still does Britain's Got Talent. Obviously with the schedule of the US X Factor it's very difficult, but he has to come back."

Bandmate JB Gill meanwhile added: "I don't think it's on the way out at all. People say, 'The winners never do this, the winners never do that'. But there are winners who have been successful - and it's not just down to the winners. It's a competition, yes, but it's also a way for people to get into the industry - whether you win, or whether you come fifth, or last in the competition."