“Please allow extra time for your journey if travelling in the area or consider alternative routes.”
Essex Police, Essex Fire Service and East of England Ambulance are on the scene.
Motorists are advised to seek an alternative route or allow plenty of extra time for their journey.
Essex News tweeted the incident involved a lorry, a van and a car.
They wrote: “M25 Anticlockwise – CLOSED between J27 (M11) and J26 (A121/Waltham Abbey) following an accident involving a lorry, a van and a car.
“Long Delays on all approaches. Clockwise is also CLOSED between J25 (A10/Enfield) and J27 (M11).”
More to follow…