Britain's Got Talent semi-final LIVE: Star dealt huge blow minutes before first show

The first live semi-final of has arrived as eight acts prepare to return to the stage and compete for the public vote.

A selection of magicians, singers and dancers will perform in front of the audience and judges on Saturday night, hoping to win that all-important place in the grand final.

In a history-making first for the show, the contestants are not only vying for the public vote, but also for the judges' or Ant and Dec's Golden Buzzer, which secures them a place in the final.

But one act has been dealt a devastating blow just minutes before the first live show of the series.