THE A12 has re-opened after a crash involving four vehicles left a woman in hospital.

One lane of the Londonbound A12 was closed following the crash on the slip-road between junctions 24 and 23 at Kelvedon at about 2.20pm this afternoon.

A woman was treated for back and arm pain following the crash.

The lane reopened at 3.20pm on the main carriageway but the entry slip-road remains closed at junction 23 for recovery work. 

The woman was taken to Broomfield Hospital for further care.