One lane has been shut on the M25 this evening after a rush-hour crash. 

Lane one of four is closed and there is slow traffic due to a crash on the anticlockwise carriageway from junction 16 for the M40 to junction 15 for the M4 J4B. 

Emergency services and traffic officers are on the scene. 

Highways England has warned that delays are building in the area and urged drivers to approach with caution.