Two women were seriously injured after the car they were in overturned on the A12 near Marks Tey.

A stretch of the northbound road has been closed since 3.25pm causing tailbacks as far as Witham and heavy traffic on the surrounding minor roads.

An elderly woman was taken by air ambulance to Addenbrooke’s Hospital in Cambridge with serious injuries to her arms and legs.

Another woman has serious head injuries.

The northbound A12 is not expected to reopen until 9.30pm.

Police have appealed for anyone who saw the moments leading up to when the car overturned to call 0300 333 4444.