Several streets around the London Bridge area remain closed:
London Bridge
Southwark Bridge
Borough High Street
Southwark Street
Lower Thames Street
King William Street
Gracechurch Street
Canon Street
London Bridge station will remain closed for the rest of the day and Borough Tube station is...
The Metropolitan police have said: “ The incident at Vauxhall is a stabbing and is not connected to the incidents at London Bridge and Borough Market.”
No-one has so far claimed responsibility for the suspected terror attacks in central London.
However supporters of so-called Islamic State have been cheering the incidents on social media, BBC Monitoring reports.
Sky News have reported a statement from prime minister Theresa May: “The terrible incident in London is being treated as a potential act of terrorism.”
Ben said: "I saw a man in red with quite a large blade, I don't know the measurement I guess maybe 10 inches. He was stabbing a man...he stabbed him about three times fairly calmly.
"It looked the man had maybe been trying to intervene but there wasn't much that he could do he was being stabbed...
Whitehall officials say the police are leading on this incident, not intelligence agencies.
It appears to have taken the authorities by surprise, i.e. there was no intelligence warning or surveillance indicating this was about to happen.
Police are now searching for three suspects, a BBC reporter at the scene says.
He says there are also reports that some people have been stabbed.
The priority for the police is now to get people - many whom where enjoying a nightout in central London - out of the area.
The police cordon is...
BBC reporter Holly Jones, who was on the bridge at the time of the incident, said the van was driven by a male driver and was "probably travelling at about 50 miles an hour".
About five people were being treated for injuries after the vehicle mounted the pavement and hit them, she said.
The...