Police at the scene
A motorcyclist who was involved in a collision on the slip road for the A40 at Marston on Friday remains in a critical condition in hospital, police have said.
The 74-year-old man suffered a serious injury to his head and leg and was taken to the John Radcliffe Hospital.
The collision happened just before noon on the B4150 Marsh Lane and involved a black Vauxhall Zafira and a blue and white motorbike.
Thames Valley Police wants anyone who witnessed the collision or saw the vehicles before the accident to contact them on 101.
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