BRITAIN'S Got Talent fans slam Alesha Dixon and say she 'shouldn't be a judge' on the show.
Alesha, 45, has been on the panel since 2012 and recently dropped a new single.
She is joined every week by Simon Cowell, Amanda Holden and Bruno Tonioli.
However, she's been accused of having a "game plan".
"Alesha Dixon should not be a bgt judge. She doesn’t vote for the best act she just votes for the act Bruno does not vote for because she doesn’t want to vote for the best act. She’s done it all week," one viewer wrote.
Alesha performed her new single as the semi-finals drew to a close, but she was left red-faced after the 'live' performance was exposed as being fake.
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Magician Trixy left the singer red-faced as he revealed that Alesha's performance had already taken place and had been pre-recorded.
Trixy let the secret slip while performing a magic trick using the calculator on his mobile phone.
BGT's Best Golden Buzzer Moments
BGT have handed out many Golden Buzzer's over the years, can you remember some of the most famous
- Loren Allred - Loren Allred, 32, from Brooklyn, New York jetted to London to audition after recording the vocals for The Greatest Showman. The stunning singer got a standing ovation and a Golden Buzzer from the judges as she delivered a stirring rendition of Never Enough from the popular film. Loren came out on stage and revealed to the judges they would have heard her voice many times before that moment. "I was hired to record the vocals for The Greatest Showman as a guide for the actors to know how to sing the songs," she explained. Loren then revealed actress Rebecca Ferguson was so stunned by her singing that she decided to let her vocals be heard in the movie. "So she lip-synced," Loren said.
- Chicken Shed Theatre Company - Comprised of individuals aged between 5 and 37, the group was set up to welcome anyone irrespective of background to get up on stage and perform and fulfil their dream. Chicken Shed prides itself on accepting anyone and does not hold auditions to make the group a safe and inclusive space. The group wowed as they performed Wonder by Naughty Boy featuring Emeli Sande. It meant that Alesha wasted no time as she decided to hit her golden buzzer for the young performers. She told them it was her "honour" to reward their inclusiveness with her golden buzzer.
- The Dancing Granny - Granny Paddy Jones and her professional partner Niko Espinosa first hit headlines when they won the Spanish talent show Tú sí que vales in 2009, before going on to appear on Britain’s Got Talent in 2014 where they came ninth. Amanda Holden was so impressed with Paddy that she gave her the Golden Buzzer, which sent them straight through to the semi-finals. But things took a worrying turn when Paddy cracked a rib while rehearsing a new move and her place on the show was under doubt. She was given the all-clear to perform in the end but didn’t quite live up to expectations.
- Bars and Melody - They will forever be remembered for their anti-bullying song on the talent show. Bars and Melody were first seen on the 2014 series of Britain's Got Talent, getting shuttled into the semi-finals when Simon Cowell pressed his Golden Buzzer. They made it to the final thanks to a performance of I'll Be Missing You but lost out on the crown to Collabro. These days Charlie Lenehan - known as Melody - is covered in tattoos, with inkings on his neck, arms and chest. But he is as close as ever to co-star Leondre Devries - who is Bars - with the pair seen enjoying themselves in exotic locations all over the world.
Speaking to the judge, he said: "Alesha, loved your performance by the way."
The star awkwardly replied "thank you", before giggling nervously.
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The blunder didn't go unnoticed among viewers of the ITV show at home.
Writing on X, formerly known as Twitter, one fan said: "So Alesha ain’t performing live then."
Another added: "The magician giving away that Alesha has pre-recorded her performance!"
A third said: "Anyone else notice that he gave the game away and said great performance Alesha…. Guessing #BGT did a little bit of early filming…."
And a fourth chimed in: "Did we miss Alesha’s performance?"
Someone else even joked: "I wondered if he was trying to show he could see into the future But maybe not..."
Alesha was seen singing her new single Ransom after all eight acts on Friday night had performed - some 80 minutes later.
As the show went to an advert break minutes beforehand, host Ant McPartlin said: "We'll be right back wth an exclusive performance from our very own Alesha Dixon!"
She then burst onto the stage in a black glittery outfit - having previously been seen in a lime green dress - before singing and rapping her heart out.
Once finished, Ant told Alesha she had "better go and get changed".
He and his co-host Declan Donnelly then made their way down to the judging table before asking the three remaining judges which finalists they thought had performed well.
With Alesha's seat empty, Simon Cowell replied: "First of all, I've got to talk about that performance by Alesha.
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"That was seriously seriously good. I'm blown away and good for you, Alesha. That was really really good."
After another ad break, Alesha reemerged in her lime green dress.