London Bridge has been closed after an incident on Saturday night, after witnesses said a van had hit pedestrians.
There are reports of casualties, with a witness telling the BBC that van had veered off the road and struck people.
Holly Jones, a BBC reporter at the bridge when the incident happened, said a van had swerved off the road into a crowd of pedestrians.
“A white van driver came speeding – probably about 50mph – veered off the road into the crowds of people who were walking along the pavement,” she told BBC News.
“He swerved right round me and then hit about five or six people. He hit about two people in front of me and then three behind.”
I’d say there are about four severely injured people. They all have paramedics assisting them at the moment,” she said.
Police are treating injured people and carrying them away at the end of Thrale Street.
Members of the public were told by police to “run as fast as they could” westbound.