Firefighters are battling a car fire on the M25 just north of Heathrow.
A dramatic image from the scene issued by Highways England shows the blaze on Wednesday afternoon (January 10).
Clockwise lane closures are in place between junction 15 for M4 and junction 16 for M40.
We will be bringing you all the latest updates on this live blog.
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Both lanes reopened
The vehicle remains on the hard shoulder.
Although one lane has been reopened, Highways England is warning drivers to proceed carefully as delays are building.
First picture from the scene
Courtesy of Highways England, this dramatic image of the fire shows a firefighter taking a hosereel to what appears to be a burning Peugeot with smoke spilling out across the carriageway.
Latest live traffic and travel map
These are the delays in the area right now according to Google.
Highways England: Two lanes closed past scene
Two lanes were shut around 25 minutes ago to allow the firefighters to take action.
Where exactly is the fire?
The fire took hold as the car was travelling between junction 15 for the M4 and junction 16 for the M40 on the Bucks border.
Firefighters battle car fire on clockwise M25
So what do we know at this stage?
Well Highways England reported shortly before midday fire crews were tackling a car fire on the clockwise M25 just north of Heathrow Airport.
Hello everyone - we will be bringing you live updates on this developing situation as we get them this afternoon. Stay tuned.