MAJOR delays are impacting motorists on the A13 after a crash.

There are delays on all fronts leading up to the junction of the A13 and A130 at Sadlers Farm this afternoon.

The crash happened shortly after 2.30pm, and one lane of the roundabout is closed.

Motorists have said the roundabout is now "gridlocked".

It is not known how many vehicles were involved in the crash.

Police have blocked off the section of the roundabout.

The ambulance service has confirmed someone was taken to hospital after the crash.

The lane remains closed and traffic is building up on all approaches to the roundabout.

Motorists are advised to avoid the area if at all possible.

Essex Police have confirmed a man has been arrested after a pedestrian suffered serious injuries.