UPDATE: Traffic has returned to normal.

There are queues on the M40 London bound, near Beaconsfield, following a crash involving a van.

Two lanes are closed and there is “very slow traffic” due to a collision between J2 A355, Beaconsfield, and J1A, M25 interchange.

Congestion is building up to J3 A40/A4094 – High Wycombe East/Loudwater.

Lanes three and four out of four are closed.