We caught up with all of the judges, plus Ant and Dec, as they arrived to begin their talent-search. The girls both recognised our reporter!
Morgan Westcott, a member of Only Boys Aloud, has spoken to ITV Wales about his experiences of cyber-bullying.
The teenage male voice choir sang the Welsh hymn Calon Lân, while fellow Welsh act Nu Sxool also won praise for their performance.
Rapping teenagers Bars and Melody are celebrating after a YouTube video of their latest performance on Britain's Got Talent hit one million views.
Charlie Lenehan and Leondre Devries, from Port Talbot, tweeted: 'One million views! Thanks to everyone who has been retweeting and favouriting... love you all!'
They went straight through to the live semi-finals after Simon Cowell pressed his Golden Buzzer, selecting them as his star performance.
Simon described them as "really great kids", adding: "I like the fact that they wrote their own song based on life experiences.
"People are going to root for them and they've got this great friendship that is so obvious when you watch them together."
Singers Richard and Adam Johnson from Holywell in Flintshire started the year turning up to a Britain's Got Talent audition just on the off chance.
Since they finished third, they have topped the album charts for four weeks - and now they've got their eye on topping the christmas charts too.
But today they were bit closer to home, as they switched on the Christmas lights of Holywell. Our own Rob Shelley was there to meet them.
Paul Potts, winner of the first series of Britain’s Got Talent, is releasing his greatest hits album. Paul from Bridgend won in 2007, with a performance of Puccini’s Nessun Dorma.
The tenor, who used to manage a phone store released the album ‘One Chance’ after the show and it soared to number one in thirteen countries. In recognition of Potts’ meteoric ‘rags to riches’ rise to fame, his life story has now been turned in to a movie, starring James Corden.
Catch up with Paul this evening when he joins us in the studio on ITV Cymru Wales at 1800 on ITV1.
A film about the life of Port Talbot opera singer Paul Potts will be shown in cinemas from today.
One Chance is described as a 'rags-to-riches tale' of a mobile phone salesman who won the ITV show Britain's Got Talent.
James Corden plays Potts, with Julie Walters as his mother.
Many scenes were filmed in Port Talbot, where Potts grew up and still lives.
He was working in a mobile phone shop in Bridgend, when he auditioned for Britain's Got Talent in 2007.
He stunned the judges with a performance of Nessun Dorma, and went on to win the first series of the ITV talent show.
He has since had been sang all over the world, and released several albums.
This report contains pictures from The Weinstein Company, and from Syco / FreemantleMedia
A film about the life of Paul Potts has its UK premiere in London this evening.
The opera signer from Port Talbot was the first winner of ITV's Britain's Got Talent.
James Corden plays Paul on his remarkable rise to fame - from a mobile phone salesman, to a world famous singer.
The film One Chance will be out in cinemas from 25 October.
James Corden plays Paul Potts in One Chance, a film about about the Port Talbot opera singer's life.
Corden told ITV News "it's such an uplifting, moving film", which shows how Potts fought "through so much adversity" and realised his dreams, because he refused to give up on them.
One Chance follows opera singer Paul Potts as a youngster growing up in Port Talbot and being bullied at school, meeting his future wife Julie-Ann, and working at a mobile phone store in Bridgend.
It shows how close he came to not even auditioning for Britain's Got Talent, back in 2007.
He was filling in an application form for the ITV show online and, struck with doubt, eventually flipped a coin to decide whether to enter.
Of course he went on to wow the judges with a performance of Nessun Dorma at his audition in Cardiff, and won the first series of the talent contest.
A film depicting the real-life story of opera phenomenon Paul Potts' rise to fame gets its UK premiere tonight in London.
James Corden plays the Britain's Got Talent winner in a journey from Port Talbot to the final of the ITV talent show.
Many scenes were filmed on location in Port Talbot.
Potts was working in a mobile phone shop in Bridgend when he auditioned for Britain's Got Talent.
The film, produced by Britain's Got Talent's judge and music mogul Simon Cowell, stars Julie Walters and Colm Meaney. Former Pobl y Cwm actress Alexandra Roach plays his girlfriend.
One Chance is in cinemas from 25 October.
Still has not sunk in yet, but our dream would not have come true without all our fans support. Thank you all x x x
Amazing news for BGT's @richardandadam Their album The Impossible Dream has gone straight in at #1 in the UK charts. Nan must be happy. x