London Bridge has been sealed off and the station closed after a van reportedly swerved off the road into a crowd of pedestrians on Saturday evening. There are also unconfirmed reports of up to three men stabbing passers-by after the incident and of gunfire around Borough Market.
Eyewitnesses told how at around 10:15pm a white van, travelling at up to 50mph, and allegedly with a male driver, swerved and struck a number of pedestrians on the bridge. It is believed up to six people may be seriously injured.
Armed police have descended on the scene and closed off the bridge in both directions.