CollisionJ10 → J10a · NB
Two lanes closed after multi-vehicle collision
Lanes 2 and 3 of 4 closed. Recovery on scene, congestion building on the approach.
+40min
Delays of 40 minnorthbound between J10 and J10a after a collision.
Updated just now · refreshes every 5 min
Lanes 2 and 3 of 4 closed. Recovery on scene, congestion building on the approach.
Narrow lanes through the works with average speed cameras in operation.
All lanes reopened. Residual delays easing.
Follow the signed hollow-square diversion via the local A-road network.
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The M40 is the quieter of the two London to Birmingham motorways, climbing through the Chilterns at Stokenchurch and joining the M42 south of Solihull. It takes the strain whenever the M1 has problems, and the J1a Denham end shares its congestion with the M25. Live incidents and closures refresh every 5 minutes.