Amateur singers, dancers, comedians, magicians, ventriloquists and novelty acts perform for a live audience and a panel of three judges. If all three judges buzz them off they must stop their act.
Did You Know?
Contestants are not allowed to sing publicly while the show is ongoing so as not to give them an unfair advantage. See more
It's obvious the judges make their decision before the contestant starts performing, for example Susan Boyle. See more
Referenced in Gavin & Stacey: Episode #3.1