A female pedestrian has been rushed to hospital in a serious condition after a crash involving a cyclist in Oxford Street.
A 40-year-old woman has suffered a severe head injury and was taken to a central London hospital where she her condition is "life threatening".
Next of kin have been informed.
Officers from Westminster were called to reports of a road traffic collision at 4.29pm on Tuesday (September 12).
Pedestrians and motorists are urged to avoid the area as roads closures are in place in Oxford Street in both directions between Davies St and Duke St.
No arrests have been made.
Officers from Westminster are investigating the incident.
We will be bringing you all the very latest updates, pictures and video on this breaking news story as it develops.
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Time to close the blog
Thank you for joining us this evening following the serious collision between a pedestrian and cyclist in Oxford Street, which has left one woman in a “life threatening” condition.
Read our full story here http://www.getwestlondon.co.uk/news/west-london-news/oxford-street-collision-road-re-13611589
Traffic is easing on Oxford Street as the road is re-opened - some delays expected
The road has reopened following Oxford Street collision.
More images from the scene
Officers remain at the scene as Oxford Street continues to be closed in both directions tonight.
Police tape has closed off a section of the road which remains more than three hours after a woman was hit by a cyclist in a serious collision.
Here is a a more recent image from the scene posted by @Andrewmc1975
Current traffic situation
Heavy traffic can be seen in the area in and around Oxford Street as investigation works continue following the cyclist and pedestrian crash.
Tube stations remain open
All London Underground stations remain open following a serious road traffic collision in Oxford Street.
Transport for London advises bus ticket holders to use their ticket on the underground within Zone 1 as a number of buses are on diversion and experiencing delays.
No arrests made
The Met Police confirmed there have been no arrests made as officers from Westminster continue to investigate the crash.
The cyclist stopped at the scene, police said.
Photo from the scene
Police tape has closed off Oxford Street while emergency services deal with the incident.
Here is an image posted on Twitter by Carl Attard @groovy23 earlier this evening:
Oxford Street closed
Oxford Street remains closed in both directions between Davies Street (Bond Street Station) and Dukes Street.
There is queuing traffic due to accident investigation works taking place.
Police remain on scene dealing with the closure following a serious accident involving a pedestrian.
Bus ticket holders accepted on London Underground
Transport for London has said it is accepting bus ticket holders within Zone 1 to travel on the London Underground.
Bus routes on diversion
A number of bus routes have been placed on diversion while police deal with a serious road traffic accident in Oxford Street.
The following buses have been diverted and subject to delays:
Metropolitan Police statement
A statement from the Metropolitan Police said:
Officers from Westminster were called to reports of a road traffic collision in Oxford Street at 4.29pm on Tuesday (September 12).
At the scene a pedal cyclist had been in collision with a pedestrian.
The pedestrian, a woman in her 40s suffered a severe head injury. The injured woman was taken to a central London hospital where her condition has been deemed life threatening.
Next of kin are aware and at the hospital.”