Four people were injured in a road traffic collision on the A12 northbound between J21 and J22 tonight.

Fire crews were called just before 6.40pm to the four vehicle incident and used cutting equipment to free the casualties, who were trapped in two cars.

At 7.44pm crews reported the first casualty was released and that steady progress was being made with rescue operations.

All casualties were released by 8pm.

An ambulance service spokesman said three people were taken to Broomfield Hospital, one with a head injury.