London Ambulance Service said 11 people were treated for injuries.
Deputy Director of Operations Peter McKenna said Saturday that nine of the injured were taken to the hospital for treatment, most with leg and head injuries.
Authorities detain a man after a vehicle hit pedestrians near London's Natural History Museum.
Meanwhile, government sources said Prime Minister Theresa May receives regular updates regarding the incident.
The incident sparked fears of a terrorist attack in an area busy with families, but Scotland Yard later confirmed it was being treated as a road traffic collision and was "not being treated as a terror-related incident".
Several people have been hurt after a auto mounted the pavement outside a London museum, Police say the incident is not terror-related.
Local reports said the auto was believed to have mounted the pavement during the incident.
A BBC report from the scene has said that some witnesses believed they heard gunfire, and that armed police had now arrived to the scene.
The incident happened around 2.20pm London time (12:20am AEDT) in Exhibition Rd, South Kensington.
People ran for shelter in nearby restaurants, where customers laid on the floor before the police arrived to usher them out, according to a Sky News report.
Dieon Rurora, 25, who also works in the cafe, said: "People were running down the street, falling over".
"It was quite scary", he said. Police are dealing with the incident'.
London Mayor Sadiq Khan tweeted that details were "still emerging" and he was in close contact with Assistant Metropolitan Commissioner Mark Rowley - the head of United Kingdom counter-terrorism policing.