Comedian David Walliams could not resist ribbing show boss Simon Cowell at the latest 'Britain's Got Talent' audition - teasing that he looked as though he has had some "work done".

The 'Little Britain' funnyman, 41, poked fun at the TV mogul's age, career and even his new racehorse as they watched potential acts for the forthcoming series.

simon cowell

David Walliams and Simon Cowell on last year's BGT

They attended an audition at the London Palladium alongside fellow judges Amanda Holden and Alesha Dixon.

READ: HuffPost UK goes behind the scenes at BGT

David turned on chief judge Simon after the music mogul asked one contestant their age.

He asked Simon: "How old are you? You've had a lot of work done."

And he took a swipe at Simon's TV career after he had suggested one act was not very "likeable".

But Simon hit back: "It doesn't matter whether people like me or not, I'm a good judge."

Loading Slideshow...
  • Britains Got Talent Auditions - London

    Simon Cowell arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    David Walliams arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Ant (left) & Dec arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Amanda Holden arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Amanda Holden arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Amanda Holden arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Amanda Holden arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Amanda Holden arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Amanda Holden arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Alesha Dixon arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Amanda Holden arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Ant (left) & Dec arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Amanda Holden arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Amanda Holden arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Amanda Holden arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    The red carpet is swept outside the Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Amanda Holden arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Simon Cowell arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

  • Britains Got Talent Auditions - London

    Simon Cowell arriving for Britain's Got Talent 2013 Judges Auditions Tour, at The London Palladium in central London.

Related on HuffPost: