National Highways has put the following diversion in place. Traffic should follow the route marked with a hollow triangle symbol on local road signs:
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 M25A National Highways spokesperson said: "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."
