Part of the A303 has been closed following a collision on the road.

The westbound A303 between Cholderton and Amesbury has been closed by Wiltshire Police after a A303 westbound closed after multi-vehicle road traffic collision took place. 

Reports on social media said the crash occured around 11:20am this morning, with drivers being warned to avoid the area.

The AA is reporting that delays are increasing behind the accident, which is affecting traffic between Andover and Stonehenge. 

Update (12:15) - Highways England is now reporting one lane has reopened on the A303 as the collision is cleared. 

Update: (13:05) - Highways England is now reporting both lanes have reopened on the A303. 

This is a breaking news story. Updates as we have them.