Drivers have been warned to expect delays this morning on a major motorway after a medical emergency forced several junctions to close and traffic to operate at 11mph.
The warning follows the M25 being forced to shut clockwise between Junction 15 (M4) near Slough and Junction 16 (M40) near Uxbridge.
The closure was implemented this morning, with National Highways announcing the incident around 9.40am.
Emergency services are at the scene dealing with the situation, which has caused significant disruption to morning traffic in Buckinghamshire.
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Drivers have been warned to expect delays this morning
NATIONAL HIGHWAYS
Drivers are now being advised to expect delays and follow designated diversion routes while the incident is being managed.
Thames Valley Police and other emergency services are currently in attendance at the scene while they work to clear the roads.
Meanwhile National Highways has deployed teams to manage the incident, with updates being provided through their regional social media channels.
To help keep traffic moving, motorists are being directed to follow the Hollow Triangle diversion symbols posted along the affected route.
The alternative route begins at M25 Junction 15, where drivers should join the M4 towards Slough.
At M4 Junction 5, also known as 'Langley Roundabout', motorists should take the fourth exit onto the A4 towards Slough.
At the A412 signals, drivers are instructed to bear left and take the second exit onto the A412 towards Watford.
National Highways has also warned that journey times will be significantly longer for those following the diversion route.
From the A412, drivers should continue to the 'Denham Roundabout' and take the first exit onto the A40 towards Denham.
The route then directs motorists to bear left onto the M40 towards Birmingham.
Drivers should then take the exit slip at M40 Junction 1A and bear right to rejoin the M25 towards Watford.
National Highways warned drivers who need to travel through the affected area to allow extra time for their journey and follow the designated diversion signs carefully.
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National Highways warned drivers taking the diversion it will cause longer delays
NATIONAL HIGHWAYS
According to reports an air ambulance has landed on the scene to assist with the medical emergency.
The motorway has now reopened with one lane still remaining closed for the ongoing incident.
