Halal Butcher Brandishes Knife at Buckingham Palace

Shocking footage shows Talhat Rehman, 54, a former Halal meat butcher shop owner (Kassam Halal Meat in Kingsbury Road), holding huge knife to his throat before being tasered by police as he ran towards them wielding two blades during Changing of the Guard at Buckingham Palace

Metropolitan Police confirm taser was used in central London at 11:50am

Photos show man holding knife to his throat during Changing of the Guard

Queen and Prince Philip were at Sandringham Estate in Norfolk at the time

Man arrested on suspicion of affray and has been taken to a police station

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