Britain's Got Talent - Season 19

Ant and Dec host the nationwide talent search, which sees a wide variety of acts compete for the chance to win a cash prize of £250,000 and a coveted slot at the Royal Variety Performance. Musician KSI replaces Bruno Tonioli on the judging panel, joining Simon Cowell, Amanda Holden and Alesha Dixon for the first set of auditions at Blackpool's Winter Gardens.

Ant and Dec host as more performers take to the stage at the auditions in Blackpool, trying to impress judges Simon Cowell, Amanda Holden, Alesha Dixon and KSI and secure their place in the live semi-finals.

Ant and Dec host as more performers take to the stage at the auditions in Blackpool, trying to impress judges Simon Cowell, Amanda Holden, Alesha Dixon and KSI and secure their place in the live semi-finals.

The auditions make their way to Birmingham's Hippodrome Theatre, where guest judge Stacey Solomon - who knows a thing or two about auditioning in front of a live audience, after coming third on The X Factor in 2009 - joins the panel alongside KSI, Alesha Dixon and Amanda Holden.

Ant and Dec host as the auditions return to Blackpool's Winter Gardens, with more acts taking to the stage with performances to impress the crowd and judges Simon Cowell, Amanda Holden, Alesha Dixon and KSI. With the presenters yet to push their Golden Buzzer, might one of today's performers be just what the pair are looking for?

Ant and Dec host as the auditions continue, with more acts taking to the stage with performances to impress the crowd and judges Simon Cowell, Amanda Holden, Alesha Dixon and KSI. With the presenters yet to push their Golden Buzzer, might one of today's performers be just what the pair are looking for?

Ant and Dec host as the auditions continue, with more acts taking to the stage with performances to impress the crowd and judges Simon Cowell, Amanda Holden, Alesha Dixon and KSI. Which acts will win themselves a coveted space in the semi-finals and the chance of a prize of £250,000 and a sought-after slot at the Royal Variety Performance.

Ant and Dec host as the auditions reach a conclusion as the final assortment of acts take to the stage in Blackpool hoping to impress judges Simon Cowell, Amanda Holden, Alesha Dixon and KSI. A coveted space in the semi-finals is at stake and with it the chance of a prize of £250,000 and a sought-after slot at the Royal Variety Performance.

Ant and Dec host the first live semi-final as acts that made it through the audition rounds perform in front of the judges and a live audience for a chance at a place in the final. Viewers hold the power to vote for their favourite acts of the night to send through to the ultimate stage of the competition, and the judges have their Golden Buzzer that can reward outstanding performers a ticket straight through.

Ant and Dec host the second live semi-final as more acts that made it through the auditions perform in front of the judges and a live audience for a chance at a place in the final. Viewers hold the power to vote for their favourite acts of the night to send through to the ultimate stage of the competition, and the judges have their Golden Buzzer that can reward outstanding performers a ticket straight through.

Ant and Dec host the third live semi-final as more acts that made it through the auditions perform in front of the judges and a live audience for a chance at a place in the final. Viewers hold the power to vote for their favourite acts of the night to send through to the ultimate stage of the competition, and one judge has the Golden Buzzer that can reward one outstanding performer with a ticket straight through.

Ant and Dec host the fourth live semi-final as more acts that made it through the auditions perform in front of the judges and a live audience for a chance at a place in the final. Viewers hold the power to vote for their favourite acts of the night to send through to the ultimate stage of the competition, and one judge has the Golden Buzzer that can reward one outstanding performer with a ticket straight through.

Ant and Dec host the concluding live semi-final as more acts that made it through the auditions perform in front of the judges and an audience for a chance at a place in the final. Viewers hold the power to vote for their favourite acts of the night to send through to the ultimate stage of the competition, and one judge has the Golden Buzzer that can reward one outstanding performer with a ticket straight through.

After weeks of auditions and five semi-finals, the national talent search comes to a close as the remaining acts perform one last time. Their aim is to win a slot at this year's Royal Variety Performance and get their hands on the £250,000 cash prize. All they have to do is impress the voting public, as the opinions of judges Simon Cowell, Amanda Holden, Alesha Dixon and KSI count for nothing - who wins is entirely down to the viewers at home. Presented by Ant and Dec.