M25 closed with four-mile tailbacks after 'medical emergency'

Motorists were stuck in long queues of traffic after a "police led incident" shut one of the, affecting thousands of cars in the process.

closed the clockwise carriage way of the M25 owing to an earlier incident. National Highways revealed on X it is a "police led incident", and between junction 25 for Waltham Cross and junction 26 for Waltham Abbey. The temporary closure has caused large tailback stretching at least four miles, trapping thousands of drivers in the area. To assist, a diversion has been set up from junction 25 to help stuck drivers.

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National Highways said on X: "The M25 in Hertfordshire is closed clockwise between J25 (Waltham Cross) and J26 (Waltham Abbey) due to a Police led incident. Emergency services are in attendance.

"If this closure impacts on your planned route, please allow extra journey time. Plan ahead, you may wish to re-route or even delay your journey."

The closure has been described as a "police led incident" and for motorists to expect delays. Some reports suggest the incident was a medical emergency. The has contacted for confirmation on the ongoing problem.

To assist stuck drivers, National Highways has suggested a diversion route and follow a a hollow triangle symbol on local road signs. The route is:

• Exit at J25 and at the roundabout take the third exit on to the A10 towards London
• Follow the A10 southbound to the Great Cambridge Junction with the A406 North Circular
• Take the first exit on to the A406 North Circular eastbound
• Remain on the A406 towards the M11
• Join the M11 northbound at J4
• Follow the M11 northbound to J6 and exit to re-join the M25