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."

The stunning songstress - who married singer Humes in a lavish ceremony at Blenheim Palace in July of this year - took to Twitter to announce the couple's happy news.

She wrote: "I wanted to be the first to tell you…we have some exciting news to share! Marvin and I could NOT be more thrilled to announce that we are expecting our first child mid next year. We have always dreamt of being parents and the news is the best early Christmas present we could have asked for. I know Marvin is going to be a great dad and we're so excited to start a family. Thanks for all of your support and lots of love, Rochelle x (sic)."

27-year-old Humes also took to JLS' official twitter page to share his excitement with his followers.

He posted on the social networking site: "Rochelle and I are SOOOO excited to tell everyone that we are expecting our first baby!!! It is absolutely amazing! Baby is due middle of next year and all is great!! We want to say thank you to everyone for their love and support...it means so much to us!!! We are over the moon. Love Marv x (sic)."

The boy band - comprising Aston Merrygold, Oritsé Williams, J.B. Gill and Marvin Humes - were runners up on the fifth series of the hit TV talent show.

Controversial contestants in this year's competition Clark and Maloney have faced a barrage of criticism from people who believe they shouldn't still be in the running for the ultimate X Factor prize.

However, JLS disagree with such condemnation from viewers of the show.

Speaking to Digital Spy band member Humes said: "One thing I don't like is the witch hunt with Chris and Rylan. I think it's unfair. Those guys, all they did was enter a competition to try and change their lives and get exposure. It's not their fault they're still here. People are voting for them. Everyone says this thing about a 'fix'."

He added: "When people say it's a fix I don't understand what they mean. It's ridiculous. I think if something was a fix the favourite would win. It doesn't make sense to me. But I do think it's unfair that they're getting death threats and bad press and things like that. I think it's really bad.

"They're just two guys that wanted to enter a competition like we did. Like Leona Lewis did. Like One Direction did."

The 'Little Things' stars have just released their second album 'Take Me Home', which has topped the charts in 32 countries, including the UK, US and Australia.

It seems the group are the pace-setters in the British boyband stakes - but it is something that JLS don't mind.

Speaking to Capital FM, Aston Merrygold praised One Direction on their talent and also their personalities. The singer said:

"It's always good to see the boys conquering the world. Literally, those boys are so humble, so down to earth and so talented. And the fact [they've had] number ones all over the place – it's the 1D revolution right now."

He added about the group's recent success: "I did manage to cop myself a couple of the songs and the album itself, so I'm very proud to be a part of that bandwagon – well done boys."

The popular British group - comprising of Aston Merrygold, Marvin Humes, Oritsé Williams and J.B. Gill - catapulted to fame after reaching second place in The X Factor 2008 final.

They have since scored a string of chart-topping hits including 'Love You More' and 'She Makes Me Wanna', and the foursome admit that they're proud of their success in the music industry.

Speaking to Entertainmentwise, Humes admitted: “We're the first boyband in recent times," before Gill added: “We're very proud to be ambassadors and having brought back the new wave of boybands.”

JLS recently scooped their fifth MOBO Award for Best Video for single 'Do You Feel What I Feel?' and are currently enjoying success with the lead single from their new studio album, 'Hottest Girl in the World'.

The cheeky charmers revealed who they think are the most attractive women in the world - but were quick to confirm that their own ladies come first.

While Williams claimed to admire the curves and sass of Nicki Minaj, Gill revealed he would choose Hollywood beauty Charlize Theron.

Merrygold named Mila Kunis, while Humes chose singing sensation Beyoncé.

During an interview with Yahoo! OMG yesterday (November 15), newly married Humes explained that Horan has bought the house and will be moving in soon, but doesn't know which room he might choose to sleep in:

"Yeah! I dunno what room he's gonna choose for his bedroom but it's true he bought my place."

The JLS lads also described One Direction as 'little brothers' because they often turn to them for advice: "One Direction came from the same show as us so they're kinda like our younger brothers.

"We watched them grow and they've done incredibly well so yeah they come to us for advice and we give them the best we can."

Member JB also opened up about the current season of The X Factor, adding that Union J have the potential to win as they're following a similar road JLS travelled on while they took part in the TV vocal talent show back in '08:

"We were in the bottom two at one point in the show and we went on to come second to Alexandra [Burke] so I think there's definitely scope for them to get to the final if not go on and win it, you never know."

Watch JLS perform an acoustic version of 'Hold Me Down' below:

They announced details of a full UK arena tour that will take them on the road in support of their brand new album, 'Evolution', from Aberdeen to Bournemouth.

Writing on their official website this afternoon, JLS explained: "Some of you asked us, some of you guessed it, some of you just wished really hard… but we are now really excited to OFFICIALLY be able to announce the JLS Evolution UK Arena Tour for December 2013!"

Tickets for the shows are due to go on general sale at 10am on Friday, November 16 although fans can access the pre-sale which will go live on Wednesday of this week.

The full list of dates can be seen below:

December 4 - Nottingham Capital FM Arena
December 6 - Aberdeen AECC
December 7 - Glasgow Hydro Arena
December 9 - Liverpool Echo Arena
December 10 - Sheffield Motorpoint Arena
December 12 - Newcastle Metro Radio Arena
December 13 - Birmingham LG Arena
December 14 - Manchester Arena
December 16 - Brighton Centre
December 17 - Bournemouth International Centre
December 18 - Cardiff Motorpoint Arena
December 20 - Leeds Arena
December 21 - London 02 Arena

Watch JLS's music video for 'Hottest Girl In The World' below:

The group will release the track 'Give Me Life' as the next song from new album 'Evolution' on December 23.

It is also reported that the quartet will tour the UK's arena in 2013, with the dates expected to be announced soon.

Speaking about his band's seeming progression in sound and maturity on 'Evolution', Marvin Humes said:

"We're massively proud of what we've achieved. We've come from the most commercial TV show in the country and we had to play it right and be very careful with what we've released...it's a natural progression to get to where we are today with 'Evolution'."

JB Gill added: "We have a lot of creative input into everything thing do - mixes, song choices, styling, live shows...We're constantly evolving and we wanted to do something bigger and better. I think we've achieved that."

Speaking about the dolls, JB explained to Wylde magazine that he didn't think it looked like him and wasn't pleased with the final design: "I wasn't very happy with mine. The second edition was alright."

Oritse Williams laughed and added: "JB's one looks like Akon, or a Caribbean George Michael!"

Member Marvin Humes also joined in, explaining that selling dolls as merchandise is a profitable business: "The whole doll thing was incredible. Take That and N*Sync did it back in the day. Now it's massive again. All the boybands have dolls. We've brought that back."

Meanwhile, JLS landed at No.3 in the midweek chart update yesterday (November 7) with their new album 'Evolution' and the final position will be confirmed on Sunday, November 11.

The lads previously described the record as "bringing UK R&B back to the masses" and it has debuted at a respectable position although the final number will be confirmed on Sunday, November 11.

Robbie Williams' 'Take The Crown' stole the No.1 position in today's (November 7) midweek update and Andre Rieu and The Johann Strauss Orchestra have entered at No.2 with 'Magic Of The Movies'.

Elsewhere in the countdown, Aerosmith's new cut 'Music From Another Dimension' has made an appearance at 8, Ne-Yo's 'R.E.D' debuted at 13, and Matt Cardle's 'The Fire' has dropped 16 places to No.24.

Watch JLS's music video for 'Hottest Girl In The World' below:

The British pop scene has enjoyed a great amount of success via its male groups recently, with One Direction, The Wanted and JLS all hitting the big time with aplomb.

Girls Aloud reunited recently to celebrate their 10th anniversary and JLS said in the Daily Star that whilst they're looking forward to seeing their 2013 tour, the boys might be put on the back foot. They said:

"Girls Aloud are back and we want to see their tour. Their new single 'Something New' feels as if, subliminally, the Girls are coming at all the boybands, because they're saying the girls are back."

They continued: "But you could say Cheryl was part of bringing a new era of boy bands. She put us through on The X Factor, and was on the show the same year 1D were on. For the fans, it'll be lovely to see them all back together."

The boyband have been active since leaving the X Factor as runners-up in 2008 and they have just released their fourth studio album 'Evolution'.

Responding to news that Robbie Williams has seemingly been removed from the Radio 1 playlist due to his age and apparent decreasing relevance to their audience, JLS said that they hope they can keep on going for as long as Williams and Take That - another 20 years, to be precise. Marvin Humes told The Sun:

"Take That have evolved into a manband. There's always going to be that love, as they've had such a great career, and that's something we aspire to. We want to be JLS for ever – and as long as we keep making good music and keep busy then there's no reason we can't be here in 20 years' time."

The singer later added: "We always want to be a part of JLS. At some point in the future we will be doing our own projects but we're just focused on our next album, our next tour. We will forever be JLS – we're a brotherhood."

The four-piece - Marvin, Oritsé, Aston and J.B - will sing their newest single 'Hottest Girl in the World' at tonight's 17th annual event, with the heartthrobs flying in especially for the award ceremony.

Marvin took to the band's Twitter page to thank fans for their unwavering support ahead of the popular music awards gala: "Thank you to everyone who has voted for us tonight! So excited!!! Marv x.

"Vibe at the #MOBOawards is wicked! Gonna be a wicked night! Liverpool are you ready?!!! Marv x (sic)."

The boys are nominated in the Best Video category for their hit 'Do You Feel What I Feel.'

Emeli Sandé and Labrinth are also set to perform at the MOBOs which are taking place at Liverpool's Echo Arena.

Sandé and Plan B are the most nominated artists for this year's awards, receiving five nods each. While Plan B is nominated for gongs including Best Male and Best Album, Sandé has been recognised in the Best Female and Best Song categories. 

The UK pop scene currently contains a number of successful boybands - such as One Direction and The Wanted - and fellow established act JLS believe that new bands need to try something different in order to make an impact.

District3 and Union J are the only groups left in the 2012 competition but speaking to Digital Spy, Aston Merrygold said that because of the market's saturation and variety, they need to be original. He said:

"Those two boybands are going to have to come out with something extremely different from what's in the market now. You've got the likes of us, The Wanted, 1D...Lawson. You've got a total mix and it's going to be hard to find your own lane." 

The 'Evolution' star added: "They're going to have to try and come out with something different. That show does bring out the best in UK talent, you can't deny that."

Although the event, which will take place on November 5 at 7pm BST, is set to be streamed online for international access the heartthrobs are also giving fans in the UK the chance to attend the event in person, and will share information about how to enter for tickets later today (October 30).

A message on JLS' official website explains: "That’s right, on the 5th of November 2012 (the release date of ‘Evolution’) your four favourite boys are going to be holding a livestream party. We want you to join us online, ask your questions, make some noise and celebrate with us! It all starts at 7pm – make sure you have the date in your diary!"

Speaking about the highly anticipated new record earlier this month, JLS revealed that they wanted "to bring UK R&B back to the masses":

"Evolution' is edgier, more R&B. We went back to basics, making a record of how we want to sound for the next few years, hence the Evolution title."

Watch their music video for 'Hottest Girl In The World' here: