There is severe traffic on the M40 London bound following a rush hour crash this morning.

Update: All lanes have been reopened.

Cars are queuing from J5 A40 (Stokenchurch) and J4 A404/A4010 (High Wycombe Handy Cross Roundabout).

Lane one of three is blocked.

This is adding to severe traffic throughout High Wycombe following a serious accident on the A4040 Marlow Hill next to Wycombe High School.