A 67-year-old motorcyclist was taken to hospital with serious injuries after a crash in Maidenhead.
A Volkswagen Golf and the rider of a Piaggio motorcycle collided in Henley road just before 8pm on Wednesday.
With the motorcyclist still in John Radcliffe Hospital, Oxford, police are appealing for witnesses.
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Senior investigating officer detective sergeant Tony Jenkins said: “I am appealing to anybody who witnessed this collision, or who was in the area and may have dash-cam footage of the incident to please contact Thames Valley Police.
“You can do so by making a report online or calling 101, quoting incident reference number 43210428216.”
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