The A38 in Cornwall is closed in both directions between Bodmin and Liskeard.
A lorry and two other vehicles involved between Two Waters Foot and Old Road. Police are at the scene.
More top news
Jeremy Corbyn's visit has been one of the big talking points of another busy day at Glastonbury.
The Labour leader said socialist politics would not be put "back in a box" as he appeared on stage at the festival.
Turning windier with a few showers