JLS think 'The X Factor' won't last forever.

The boy band - who shot to fame on the reality TV show in 2008 - think the show is coming to its natural end, although they still enjoy watching it.

Ortise Williams said: "'The X Factor' is an incredible show and it launches great talent, but I think people want something new and exciting, and like any show, 'The X Factor''s not going to last forever. But it's still enjoyable to watch."

However, the singer admitted he would love to join the judging panel on next's year's tenth and final series of the ITV1 show.

Ortise told Top of the Pops magazine: "I wouldn't say no to 'The X Factor'! I think judging talent would be amazing."

The group - also comprising J.B. Gill, Marvin Humes and Aston Merrygold - are also impressed with current judge Tulisa Contostavlos' new autobiography 'Honest', but they think they are too boring to warrant a book being written about them.

Marvin - who wed The Saturdays singer Rochelle Wiseman this summer - said: "I haven't read it, but she's always been very open. Tulisa's gone through a lot more than I have. I don't think people would be that interested in my book."

Aston joked: "No - few people are actually that interested in me to read that!"