Tasered man detained by Police

A man shouting and holding knives has been tasered by police outside Buckingham Palace.

The drama unfolded as hundreds of tourists and Londoners gathered to watch the changing of the guard.

A warning - Nick Thatcher's report contains footage that some viewers may find upsetting.

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Man Tasered at Buckingham Palace

A man was in police custody today after being Tasered outside Buckingham Palace while shouting and holding a knife to his own neck.