The first set of semi finalists perform live in front of the judges and viewing audience. After all the acts have performed the phone lines are opened for tonight's public vote. At the end of the show Ant and Dec announce that Susan Boyle has the most amount of votes and has made it through to the final. Diversity and Natalie Okri learn they have the next most amount of votes. The judges then decide to put Diversity through to the final.
Britain's Got Talent is a reality talent show hosted by Ant and Dec. Any sort of entertainment act is able to enter the competition and hopefully impress the judges and make it through to the final stages of the competition.
The series winner's prize is £100,000 and the chance to perform at the Royal Variety Show. The judges on the show are Simon Cowell, Amanda Holden, Alesha Dixon and David Walliams.
Britain's Got Talent - Series 3, Semi Finals 1 Synopsis and Schedule