David Walliams arrives LATE to auditions! | Episode 4 | BGT: UNSEEN

Get ready to ROCK with mini musician Joseph Sheppard, LOL along to Nick Dixon and RAVE to Art Afishal's SPECTACULAR audition!

Catch all this talent PLUS more backstage bits with our Judges on Episode 4 of Britain's Got Talent: Unseen.

See more from Britain's Got Talent at http://itv.com/talent

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