Kent's X Factor acts have survived another week on the show after a dramatic weekend.

Only The Young, featuring members from Chartham and Ramsgate, and Stereo Kicks - including Dartford's Charlie Jones - secured enough public votes to avoid elimination.

Lancashire pub singer Paul Akister wasn't so lucky, and became the latest act to leave the show.

But there was drama on last night's X Factor as a prankster invaded the stage during Stereo Kicks' performance.

The intruder - later unmasked as BBC comedian Lee Nelson - caused a stir when he interrupted the boyband's rendition of Michael Jackson's You Are Not Alone.

The group - featuring Wilmington schoolboy Charlie Jones - could be seen looking worried before the joker burst onto the stage.

He was then carted off by production staff as the judges stood up and watched in disbelief.

Ever the professionals, the eight-strong band continued singing - and drew some of their best-ever comments from the star panel.

Mel B said: "You had to deal with an idiot imposter - we are live! - and you still carried on. That was your best performance to date."

Cheryl Fernandez-Versini agreed, adding: "I don't know how I would've dealt with what you've just dealt with.

"To still sing like that and carry on and maintain your focus like that is a real sign of professionalism.

Simon Cowell told the boys: "Good for you. These things happen on live TV. The energy was great."

And the group's mentor Louis Walsh quipped: "Everybody wants to be in this band now! Some guy just walked out of the audience."

The incident appears to have helped save the Stereo Kicks from the chop.

Before the performance, they were tipped by bookies at 3/1 to leave the competition.

But after the show, that dropped to 13/2 - behind Jay James and Paul Akister.

Meanwhile, Kent's other act - Only The Young - also impressed with their take on Michael Jackson's Blame It On The Boogie.

The four piece were also given odds of 3/1 before the performance.

But that rose to odds of 7/1 after the show, when they attracted praise from the judges.

Mel B described the performance as "fun, happy and lively" with Cheryl pointing out their "genuine" chemistry.

Simon added: "You are now back in the competition. I don't think this show would be the same without you."

The acts that survived this week will be included in the X Factor live tour after the show's finale in December.