POLICE are warning motorists to avoid the A303 after a serious accident involving a car at Chaddenwick Hill.

Emergency crews were called out to the incident at 3.30pm, after a car went off the road into a field and flipped near West Knoyle.

A man and woman are believed to have suffered serious injuries in the crash.

The A303 is closed between Mere and Willougby Hedge and motorists have been advised to avoid the area.