The 43-year-old man was detained at the scene of the collision on suspicion of criminal damage and dangerous driving.

He was taken into custody but has has since been released under investigation.

The silver Kia car crashed into the gates at around 4.20pm on Thursday. There were no reports of any injuries.

Witnesses at the time described an "almighty smash" and armed officers confronting the lone motorist.

The prime minister was in Downing Street at the time of the crash.

But Rishi Sunak, who had been due to leave No 10 anyway, departed after the incident.