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Justin Bieber fans kept waiting at London gig

5 March 2013 Last updated at 07:42 GMT

Teen pop idol Justin Bieber has angered parents and fans by emerging onstage for a concert at London's O2 Arena almost two hours late.

The star had been due to appear at 20:30 GMT, but he did not begin performing until almost 22:30.

Fans reported that there were boos from the crowd almost an hour before Bieber's act eventually started.

No-one connected to the show has commented, but the venue apologised for the late start via its Twitter feed.

The BBC spoke to people who were at the venue on Monday night.