A man has been arrested after a car crashed into security barriers outside Britain's Houses of Parliament, Scotland Yard says.
Dozens of emergency vehicles have been seen swarming around Parliament Square in Westminster with people ordered to stay clear of the area.
Video shows smoke coming from the bonnet of the vehicle and police officers urging people to leave the scene and find alternative routes.
Parliament Square has been closed as a result of the crash. Streets around Parliament Square, Millbank and Victoria Tower Gardens have been cordoned off as dozens of armed police swooped on the scene.
Armed officers could be seen surrounding the car before leading a man away in handcuffs.
Scotland Yard said: "At 0737 hours today, a car was in collision with barriers outside the Houses of Parliament.
"The male driver of the car was detained by officers at the scene. A number of pedestrians have been injured. Officers remain at the scene.
"We will issue further info when we have it."
The Houses of Parliament are surrounded with security barriers of steel and concrete.
The measures were extended in the wake of the Westminster Bridge attack in March 2017 when Khalid Masood ploughed a car into crowds on Westminster Bridge, killing four people.
Masood abandoned his car then stabbed and killed unarmed police officer Keith Palmer before he was shot by armed police in a courtyard outside parliament.
Reuters
