Nine acts will take to the stage in front of Simon Cowell, David Walliams, Amanda Holden and Alesha Dixon, in a bid to make it through to the June 7 grand final.
The two runners-up will go before the judges one final time, as Cowell and the other judges choose which act joins the semi-final winner in the final.
The acts performing in the second semi-final are:
Drewett has penned tracks for the likes of One Direction and The Wanted, but took a step towards finding fame himself when he auditioned. He secured himself three yeses in Simon's absence. Drewett told Digital Spy that suggestions he is being paid by Simon are untrue.
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The Leicester-based dance troupe shocked the judges with their surprisingly dark dance routine, which Simon described as "refreshingly evil". Amanda thought their audition was "incredible", while Alesha said that they are "in it to win it".
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The motocross display team took Britain's Got Talent out of the theatre for their death-defying audition in Cardiff. They impressed all four judges with their stunts. Alesha was left "blown away" by the spectacle, while Simon described it as "one of the most incredible things" ever on BGT.
Essex girl band Sweetchix, made up of 14 and 15-year-olds, got Simon excited about their potential after their rendition of 'She Said' and 'Back to Black'. David praised their "personalities" and went so far as to compare them to the Spice Girls and Take That.
James, 14, took on 'Feeling Good' at his audition, prompting Simon to call the audition one of his favourites so far. Alesha was also a fan, calling him "industry ready".
Simon stopped 15-year-old Jodi in the middle of 'Don't Rain on My Parade' because he wasn't a fan of the song, but once she started again she won him and the other judges over to secure a spot in the next round. Simon was forced to admit that he had "acted prematurely", and went on to praise the singer.
32-year-old Kony, from Poland, surprised everyone with his innovative puppets. The audition included Beyoncé classics like we'd never seen them before, and had the judges in stitches. David said it was "very funny and very entertaining".
Big-haired dancers Mini Moves - aged 11-12 - strutted their stuff to Little Mix's 'Move' at their audition, and made it to the live shows despite an initial no from Simon.
Musical comedy mime act Ricky K managed to get Simon laughing out loud with his routine about romance in a nightclub, which David predicted "will appeal to a lot of people".
Britain's Got Talent continues tomorrow night at 7.30pm on ITV.