London Bridge has been placed on lockdown amid reports of three men carrying knives attacking people and up to 20 have reportedly been struck by a van.
Armed police are at the scene in what is being described as a “major incident”, possibly a terrorist attack.
Witnesses described a white van mounting the curb and hitting as many as up to 20 people on the bridge.
The incident happened at 10.30pm on Saturday.
A cab driver on the bridge has reported he saw a stabbing man.
Members of the public have been warned to stay away from the area, and London Bridge station, a busy interchange connecting the Tube and rail networks, has been closed.
More to come.