Surrey M3 live updates as all lanes closed in one direction after accident and air ambulance on scene

Three lanes (of four) are currently closed on the M3 southbound from Junction 3 A322 (Lightwater / Bagshot) to Junction 4 A331, following a crash which reportedly involved a car transporter and a van. National Highways are reporting 50 minute delays to expected travel time, with the M3 westbound entry slip at junction J3 also closed. Traffic monitoring site Inrix is reported at around 1.45pm: "M3 Southbound closed, long delays due to accident, a car transporter and a van involved and debris on road from J3 A322 (Lightwater / Bagshot) to J4 A331 Blackwater Valley Route (Camberley).

Congestion to routes through Lightwater as traffic heads away."

"Northbound traffic has now been released, accident is on the southbound side which remains closed traffic has been stationary southbound since around 12.40pm."

This is a live blog - so follow for updates as they come.