- Firefighters put out a car on fire at the crash scene near Sheering, north east of Harlow
- Three people were cut out of cars at the scene of the crash by firefighters
The motorway will reopen as soon as it is safe to do so but the closure is expected to last for several hours, through the evening rush hour and into this evening. Current delays are at least 30 minutes.
Drivers, and in particular those wishing to travel to Stansted Airport are advised to plan their journeys and allow extra time to travel.
More top news
The terror attack carried out by Khalid Masood at Westminster that left four people dead lasted less than two minutes say police.
Two knives were found at the scene in Islington, North London, and the suspects fled on foot before being arrested.
The family of the police officer who was murdered in the Westminster attack have thanked those who were with him 'in his last moments'.