The A12 has been closed between Junction 18 (for Maldon and the A414) and Junction 19 due to a serious accident on the northbound carriageway.

Traffic is also being held temporarily on the southbound side to allow the air ambulance to land.

Emergency services, including Essex Police, are in attendance.

A spokesperson for Highways England said: "Delays are likely on the approach to this closure, with additional journey times also expected on diversion routes."

Further incident information and updates are available from Highways England by visiting the Traffic England website using the link here.

You can also find more information on the @HighwaysEAST regional Twitter feed. Highways England 24/7 Customer Contact Centre is also available to provide up to the minute information on 0300 1235000.