Britain's Got Talent bosses are beefing up security ahead of the live shows on ITV tonight.
The Daily Star on Sunday newspaper reports that show chiefs are on high alert with the current "severe" terror threat in the UK.
The tabloid claims that the BGT team fear the live semi-finals, filmed in London, could prove to be a likely target.
Extra security guards, metal detectors and airport style screening devices will be used on those entering the studio from this evening.
"Producers are taking no chances," a source said. "Because BGT is such a big show, they know there is a risk of an attack.
“As a result, every possible measure is being taken to make sure everyone is safe. Not only are extra checks being put in place, all staff have been told to keep an eye out for anything suspicious.”
The Britain's Got Talent live shows begin this evening and will air every night over the week until Thursday.
Each evening nine acts will perform for the public vote and two will make it through to the last stage.
There will be a break on Friday - for an England football game - before the grand live final next Saturday.
The source said: “Everything is in place to make sure the live shows go smoothly.
"The venue has a strong reputation and they want to keep it that way.”
Britain's Got Talent airs from 7:30PM tonight on ITV.
Acts performing in this evening's first semi-final include Alesha Dixon's golden buzzer act 100 Voices of Gospel, singer Kathleen Jenkins and impressionist Darren Altman.
Joining them are singing mum and son Mel & Jamie, gymnasts Spartans Resurrection, dance troupe Total TXS and ballroom performers Ystrad Fawr Dancers.