Ant and Dec couldn't stop laughing after they were able to pull a prank that left Britain's Got Talent head judge Simon ...

Internet personality KSI is a special guest judge on this year's series of Britain's Got Talent. Here is all you need to know about the UK ...

Internet personality KSI is a special guest judge on this year's series of Britain's Got Talent. Here is all you need to know ...

Unseen footage from Britain's Got Talent show the hilarious moment Ant and Dec manage to pull a prank on Simon Cowell .

Guest Judge KSI gets Blackpool squirming as he eats the remnants of a previous act's costume. Catch brand new Britain's Got Talent on Saturday 1st March at 7pm on ITV1, ITVX and STV.

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