Police are now responding to an incident near Oxford Circus Tube station, in central London, at the start of the evening rush hour. London's Metropolitan Police tweeted telling everybody on Oxford Circus "go into a building". "Officers are on scene", the British Transport Police said via Twitter.
There has been an evacuation at London's busy Oxford Circus subway station, but it's not clear as to the incident that's led up to it. Officers are on scene and dealing. "At this stage police have not located any casualties".
The area was packed with rush-hour commuters and shoppers along the shopping street.
Armed police are at the scene.
At 5.10pm it was announced that Bond Street has also been closed.
Another added: "Too much police in Oxford Circus Street".
The Tube station at Oxford Circus is now closed and TfL are advising all to avoid it.
A police statement said: "We continue to respond to an incident at Oxford Circus. All trains are not stopping and paper tickets will be accepted on local buses".