BGT viewers convinced they’ve spotted clue that reveals how magician Keiichi Iwasaki did his semi final tricks

BRITAIN’S Got Talent viewers have spotted a huge clue that reveals how magician Keiichi Iwasaki did his trick in tonight’s semi-final.

Ant and Dec’s golden buzzer act pulled out all the stops to try and impress judges Simon Cowell, Alesha Dixon, Amanda Holden and David Walliams.

Keiichi stunned the judges when he produced a bottle out of nowhere and gave Simon to enjoy a refreshing sip.

The magician was flapping his hands all over the place – but fans pointed out this was was simply to distract the audience as he pulled the bottle of beer out of his back pocket.

The camera caught the sneaky move but Simon was oblivious and was clearly impressed after Keiichi hid the bottle quickly underneath a red handkerchief.

Eagle-eyed fans were quick to solve the mystery behind the magic trick.

One wrote: “You can see him taking that bottle out of his back pocket LOL. #BGT”

Another posted: “Pulled the bottle from his back pocket. #BGT”

A third cheekily commented: “Con artist move. #BGT”

Someone else was thrilled with the act, writing: “Keiichi is fantastic and funny. Loved this!! #BGT”

It comes after the semi-final was thrown into chaos as Simon ‘walked off’ live on air.

The first group was French dance act Les Sancho, who initially impressed the judges with their street-dance routine to Vossi Bop by Stormzy, were hoping to blow the judges away again tonight.

On Wednesday’s episode, the group tried to replicate the same success with their choreographed routine to a Busta Rhymes track.

Judges Simon, Amanda Holden, Alesha Dixon and David Walliams returned tonight for the third live show.

However, the first act didn’t go down well and Simon pressed his buzzer half-way through the performance.

The crowd clearly didn’t agree and began to boo Simon, forcing him to explain himself: “I buzzed you because I love your first audition, it was all about fun, personality, surprises.

“This was everything I’ve seen before with a dance group but other times it was better.”

David then piped up and joked: “Why don’t you just go home.”

Simon bluntly replied: “I will.”

He got up and waved goodbye to the judges and the audience.

But it wasn’t long before David was pleading for Simon to return and added: “No, don’t because you pay our wages.”

Simon was quick to return to his head judge seat and told the act: “I don’t think it was as good as the first audition.”

Viewers were left in stitches watching Simon’s unexpected exit.

One wrote: “Oh god it would be hilarious if Simon was gone before there’s even been two acts. #BGT”

Another posted: “David to Simon ‘why don’t you just go home!’ #BritainsGotTalent”

Another viewer was left in hysterics: “Why don’t you go home – haha oh David.”