The incident is not currently being treated as "terror-related" and local police are investigating.
There were no reported injuries and the current terrorism threat level in Britain is "substantial".
The car crashed into the gates and the main gate appeared to be undamaged.
A witness said the driver was a white man in his 50s.
The incident is being dealt with by local police in Westminster and the car is being examined by workers.
LONDON DAILY ARCHIVE
Car Collision at Downing Street Leaves No Injuries
On May 25th, in London, a car collided with the front gates of Downing Street, the site of the British Prime Minister's office and residence.
27 May 2023 · 00:01 UTC
