Met police have said they were called at 11.19am today (August 30) to reports a man had fallen from a bridge above the A40 in Northolt.
The London Air Ambulance can be seen landing on the road in pictures released by Transport for London (TfL).
Officers said the man has suffered serious injuries and has been taken to a central London hospital.
Police believe the man fell from the Target Roundabout, a bridge which towers above the A40 in Northolt.
Large queues of traffic can be seen on both sides of the road closure, which is between the Greenford Flyover and the Target Roundabout.
Police, who were called to the incident by London Air Ambulance (LAD), said they have closed the road while officers deal with the incident.
It is not yet clear if the man is in a critical condition, police said.
That’s it from us on this live blog, however please stay tuned to getwestlondon for any further updates.
Here’s our summary of today’s events: http://www.getwestlondon.co.uk/news/west-london-news/a40-northolt-closed-air-ambulance-11818322
Watch as helicopter lands on A40
Footage from the BBC.
Bus routes resume to normal service
Watch as Air Ambulance helicopter leaves A40.
Footage from Tim Garner.
Congestion now clearing
London Ambulance Service release statement
A London Ambulance Service spokesperson said: “We were called at 11:15am to reports of a person fallen from a height in Northolt.
“We sent an ambulance crew, a single responder in a car, an incident response officer and our hazardous area response team to the scene, alongside London’s Air Ambulance.
“We treated a man at the scene and took him as a priority to a hospital in west London.”
Picture of helicopter on road
Police confirm no vehicles involved in the incident
Met police have told getwestlondon that there were no vehicles involved in the incident with the male, who fell from the Target Roundabout bridge.
Roadside picture of helicopter landing
Delays to bus routes 90,120,140 and 282
According to Transport for London (TfL), the A40 had now reopened in both directions at the Target Roundabout.
There are residual delays westbound from Hanger Lane, eastbound from Hillingdon Circus.