Britain's Prince Philip has surrendered his driving licence as prosecutors considered whether to bring charges over a crash that injured two women.

Prince Philip, 97, voluntarily gave up his credentials to Norfolk Police today.

The police force said a file on the investigation into the crash last month had been passed to the British Crown Prosecution Service (CPS).

Philip apologised for his part in the accident on the Sandringham estate in Norfolk when his Land Rover Freelander collided with another car, leaving two women needing hospital treatment.

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A CPS statement said the file would be reviewed before a decision to charge or not was brought, and noted that prosecutors "will take this development into account".

One lawyer had previously suggested the duke could avoid any potential prosecution for driving without due care and attention by giving up his licence.

Today, a statement from Buckingham Palace said: "After careful consideration, the Duke of Edinburgh has taken the decision to voluntarily surrender his driving licence."

Norfolk Police confirmed Philip had "voluntarily surrendered his licence to officers".

On 17 January Philip was driving when his car flipped over after he pulled out into a busy road. His car collided with another car, carrying a nine-month old boy, his mother and another passenger.

Philip escaped injury, but passenger Emma Fairweather broke her wrist and called for the duke to be prosecuted if he was found to be at a fault.