A teenage boy has been hit by a van in a village south of Devizes this afternoon.
Wiltshire Air Ambulance landed near to the serious incident in Lavington Lane, Lavington School, in the village of Littleton Panell at around 2.15pm.
The 14-year-old boy has suffered potentially life-threatening head injuries and has been taken to the Regional Major Trauma Centre in Bristol.
The road has been closed in both directions whilst 999 crews work at the scene. It is likely to remain closed for several hours for a collision investigation.