TRAFFIC is building following a crash involving a car and a lorry on the A12.

The East of England Ambulance service were called to the accident at 7.15am this morning, at Junction 21 Witham South.

They sent one ambulance to the scene of the crash. 

The carriageway is blocked Londonbound and queues are back to Junction 24 at Kelvedon North.

There is also slow traffic from Junction 25 at Marks Tey towards the Witham bypass.

The ambulance service are still at the scene treating one casualty.

UPDATE 9.20AM The incident has now cleared.