Speaking to BBC Radio London earlier, Sean – a black cab driver in Blackfriars – described seeing three horses gallop towards Buckingham Palace.
“It sounded like a car crash, one was possible injured,” he said. “Maybe that is why there are only two being seen.
“I pulled out of Buckingham Palace Road, there one of the riders was on the road on his back being tended to.
“There was a Mercedes Vito parked outside the Grosvenor Hotel with its side smashed in and covered in blood.
“All the windows were smashed so I am guessing the white horse has hit that running into it.”