Britain's Prince Philip is said to have been left 'very shocked' following a car crash in Norfolk.

It happened near the Sandringham Estate, which belongs to his wife Queen Elizabeth II, just before 3.00pm Thursday afternoon.

Prince Philip was breathalysed - along with the driver of a Kia that was also involved in the collision - in line with police policy.

Both breathalyser tests were negative, Norfolk Police said.

Buckingham Palace confirmed Prince Philip was at the wheel but said he was unhurt.

In a statement, Norfolk Police said: "The female driver of the Kia suffered cuts while the female passenger sustained an arm injury, both requiring hospital treatment."

The force added that both women have since been discharged.

Pictures from the scene show the 97-year-old's Land Rover overturned on the side of the road - and later, the heavily damaged vehicle was seen close to a recovery truck.

The Duke of Edinburgh, Britain's Prince Philip | Image: Aaron Chown/PA Wire/PA Images

However it has sparked a debate on whether he is too old to drive at 97.

Edmund King is the president of AA UK

He said calls for elderly drivers to face bans or restrictions after car crashes are misplaced.

He said: "Many commentators use high-profile car crashes involving elderly drivers as a reason to call for bans or restrictions on older drivers.

"If driving restrictions based on age and safety were introduced we would be more likely to restrict young drivers rather than older drivers.

"Young, predominantly male, drivers are much more likely to crash within six months of passing their test than older drivers within six months of hanging up their keys.

"Older drivers often self-restrict their driving by not driving at night and only driving on familiar roads.

"The decision to hang up your keys is a tough one but should be based on personal advice from your GP and family rather than being based on some arbitrary age.

"We all age differently and the car is an essential lifeline for many elderly people."

While there is no legal limit on driving ages in the UK, motorists have to renew their licence at least 90 days before reaching the age of 70 - and then every three years after that.