Overview
- The crash occurred at about 8:40pm on Saturday on the London-bound M40 between junctions 4 (High Wycombe) and 3 (Loudwater).
- A grey motorcycle with a pillion passenger collided with a black Volkswagen Polo and a blue Hyundai Tucson.
- The passenger, a woman in her late teens, suffered life-threatening injuries and remains in critical condition in hospital.
- The rider, a 20-year-old man from Maidenhead, was arrested on suspicion of dangerous driving and causing serious injury by dangerous driving and remains in custody without reported injuries.
- Investigators closed the carriageway for roughly seven hours and are urging witnesses or dash-cam owners to come forward, quoting reference 43260088366 and using the dedicated online portal.