I do consider her one of my best friends.” Although Cheryl never took part in BGT, she became a judge on The X Factor UK in 2008, where she mentioned Alexandra Burke and Joe McElderry in their series.
Speaking of his excitement ahead of the ITV show's launch in February, he said: "I'm so excited to be a guest judge for BGT," KSI said in a statement.
Before Amanda was chosen for the hit programme, Simon offered singer Cheryl a spot on the judge's panel but she changed her mind a week before filming began.
The music mogul is head judge on the talent show alongside Alesha Dixon, Amanda Holden and Bruno Tonioli.
BGT, which returns on Saturday for its 18th series, also features hosting icons Ant McPartlin and Declan Donnelly as presenters of the show.
