Britain's Got Talent has made a massive change to its semi-finals after 18 years of airing the last stage of the competition across one week. The semi-final stage of the competition is fast approaching, with just one last pre-recorded episode left to air. ITV announced today that the semi-finals will now air every Saturday night over five weekends, instead of consecutive days leading up to the final. The first of the semi-finals will air on Saturday 26 April from 7pm. ITV said: "Britain’s Got