Stephen Mulhern has confessed that he is worried that David Wallliams will "run free" during the live finals of Britain's Got Talent.
The spin-off show host admitted that the comedian could cause havoc during the live broadcasts next week.
Stephen told Digital Spy: "I'm still surprised with the arrival of David Walliams that there hasn't been a delay put on these live shows.
"Not because of bad language, but because you never know what you're going to get with David!
"There's not even a five or six-second delay, David's going to be running free."
Britain's Got Talent judges Amanda Holden and David Walliams recently hit the headlines when they admitted that they are planning to cause "chaos" for Simon Cowell.
The panelists know that once the live finals for the talent show are on air Cowell cannot control what they do.
The both told Alan Carr on Chatty Man that they will be "as naughty as possible".
Simon has apparently "barred" Walliams from sitting next to him as he is worried what he will get up too.
David said: "Simon uses the women as a human shield between me and him."
Amanda added: "We'll swap. Simon won't want you next to him but it's live so it doesn't matter. We can do it!"
David moaned: "Simon doesn't like anything that makes him look silly. He doesn't even clap along - that would be too uncool.
"I've tried to dance with him, I lap-danced for him once, but it doesn't work."
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