Broken glass and auto parts litter the road at the site if the Duke's accident (Photo: John Stillwell/PA Wire) The force said a file on the investigation had been passed to the Crown Prosecution Service (CPS). Police said they offered him "suitable words of advice" after that.
The Duke of Edinburgh was behind the wheel of a four-wheel-drive near the royal family's Sandringham estate in eastern England when he smashed into another vehicle on January 17.
The Duke of Edinburgh, 97, gave up his credentials on Saturday, Buckingham Palace said.
A CPS spokesman said the service "will take this development into account" as it studies Philip's case.
Debris is seen at the scene where Prince Philip was involved in a traffic accident in January.
A witness told British media that Philip emerged unharmed but "shocked and shaken" from the smashup with the much smaller Kia hatchback.
Philip's driving woes began on January 17 when his vehicle flipped over after he pulled out into a busy A road and collided with a Kia, carrying a nine-month old boy, his mother and another passenger.
In 2016, the Duke drove Barack Obama and his wife Michelle to lunch at Windsor Castle, prompting the former US President to remark: "I have to say I have never been driven by a Duke of Edinburgh before, but I can report it was very smooth riding".
Police said Philip and the other driver both passed blood-alcohol breath tests.
Philip came under strong media criticism for failing to quickly and publically apologise for causing the accident.
He said he was "deeply sorry" and explained while he was familiar with the junction he could "only imagine" the low sun stopped him seeing her approaching.
Now Prince Philip, who was seen back behind the wheel just days after the crash not wearing a seatbelt, has given up his driver's licence, Buckingham Palace confirming the news, adding that the Duke's decision was his own.
Dymond also called Philip a "fiercely independent" person who "would have resisted any suggestion that he be denied the right to drive himself".
He is famous in Britain for his forthright manner and his love for speed.