Thames Valley Police are appealing for witnesses or dash cam footage of the collision.
It occurred on the northbound carriageway between junctions 8A and 9 in Buckinghamshire just before 11am yesterday (7/11).
Two cars were in collision, a white MG and a purple Mazda.
Sadly, as a result of the collision, the passenger in the MG, a 57-year-old woman from Bridgend in Wales died at the scene.
The woman’s next of kin have been informed and are being supported by specially trained officers.
The driver of the Mazda, a man sustained minor injuries and is in hospital at this time.
Investigating officer Detective Constable Elizabeth Scurlock, of the Serious Collision Investigation Unit, said:
“First and foremost, our thoughts are with the family and friends of the woman who died as a result of this collision. On behalf of Thames Valley Police, I would like to offer my sincere condolences.
I am making an appeal to anybody who witnessed the collision or who may have dashcam footage of the collision or the moments leading up to it, to please contact police on 101, quoting reference number 43210503143.
“Alternatively, you can contact the independent charity Crimestoppers on 0800 555 111.
“The road was closed for many hours while emergency services were on the scene and our investigation commenced. I would like to thank the public for their patience and understanding while we dealt with what was a particularly difficult scene.”
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