(BBC) Pedestrians have been hit by a white van on London Bridge in the centre of the capital
Eyewitnesses tell the BBC several people are injured
Armed officers and paramedics at working at the scene
Police say they are also responding to an incident in Borough Market, near London Bridge
Downing Street says Prime Minister Theresa May is being regularly updated
London Bridge railway station is closed while transport police deal with the incident
Transport for London says the bridge is closed to all traffic