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Britain's Got Talent: What's new and who are the semi- finalists?

The judges right to left Simon Cowell, Amanda Holden, Alesha Dixon and Bruno Tonioli.Image source, Getty Images

Britain's Got Talent semi-finals begin tonight with live shows as usual but there are some changes.

Instead of airing every day for a week, the live shows will take place every Saturday.

The live semi-finals have another twist - a golden buzzer which could turn everything on its head.

Read on to find out what else we know about the live shows.

What's new for BGT semi-finals?

The judges sitting behind the buzzers.Image source, PA Media
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The famous golden buzzer will now be part of the live shows

The iconic buzzer which is used during the auditions is now going to feature in the live shows.

According to ITV each semi-final, either one of the judges or Ant & Dec will be given control of the Golden Buzzer.

They will have just one opportunity to press it.

This act will be able to go straight to the final along with one other act from the night voted in by the public.

Who are the golden buzzer semi-finalists?

Olly playing a red electric guitar on his knees with a look of deep concentration. He is on stage, and wearing a black back to front baseball cap, a green vest top and black shorts. His hair is light brown and reaches beyond his shoulders.Image source, Britain's Got Talent/Freemantle/SYCO
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Olly Pearson, 11, went straight through to the semi-finals

Maya Giotea

Maya Giotea, 14, performed Beyoncé's song Listen and impressed Bruno so much he reached for the buzzer as she sang her final note.

Olly Pearson

Olly Pearson is just 11 years old but his guitar solo got him a golden buzzer. he promises his semi-final performance will "be bigger, better, louder".

Electric Umbrella

This band performed an original song about inclusion and wowed the audience and Simon Cowell.

Linda Mudzenda

Performing Lauren Daigle's You Say, Linda got praise from all the judges and a golden buzzer from Alesha Dixon.

The Blackouts

All four of the judges were amazed by this dance troupe and their LED outfits.

KSI arriving at the BGT auditions.Image source, Getty Images
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Guest judge KSI was impressed by singer Stacey Leadbetter

Stacey Leadbetter

Stacey's version of Snow Patrol's Run had the audience chanting for her to get the buzzer and guest judge KSI was the one to give in to their demands.

Will Burns

Will Burns got the golden buzzer from Ant and Dec for his impressions which included Dec's character from children's drama Byker Grove PJ and naturalist and presenter David Attenborough.

Vinnie McKee

Vinnie McKee sang The Proclaimers' I'm Gonna Be (500 Miles) and impressed Simon Cowell so much he got the golden buzzer.

Who will be in the first semi-final?

ITV has revealed the list of people appearing on the first Live Show of Series 18. The acts competing on Saturday 26 April will be:

Akira

Akira is from Japan, he performed a cheeky variety act on the show wearing nothing but a bow tie.

Auzzy Blood

Auzzy Blood made a strong impression with his scary face paint and corkscrew nose trick. Amanda described his unusual act as "horrifically brilliant".

Eden Choi

Magician Eden Choi's dramatic card routine impressed the judges.

Heavysaurus

Dinosaur band Heavysaurus rocked their way into the semi-finals.

Linda Mudzenda

Support worker Linda Mudzenda appeared nervous to start with but sang beautifully and earned her way through to the next round.

Teddy Magic

Teddy, 8, wowed the judges with his magic tricks and by giving KSI a bottle of champagne which shocked everyone when it popped partway through the performance.

The Blackouts

This dance troupe lit up the stage with their colourful LED costumes in the darkened studio. The crowd loved them so much they called for a golden buzzer and the judges agreed.

Vinnie McKee

Singer Vinnie McKee also got a golden buzzer for his unusual cover of the Proclaimers hit, I'm Gonna Be (500 miles).