Police have arrested a man in connection with an incident in which a car crashed into the gates outside 10 Downing Street.
Armed officers rushed to lock down the area around the Prime Minister's official residence after the silver hatchback smashed into the gates at around 4.20pm. Cops then arrested a man on suspicion of criminal damage and dangerous driving.
Large sections of Whitehall have been closed to the public and vehicles, with pedestrians being turned away from the main thoroughfare around Downing Street in central London. There is a significant police presence in the area.