The Duke of Sussex got stuck into the cake as he visited the Royal Flying Doctor Service and marked the organisation’s 90th anniversary.

Harry and mother-to-be Meghan were introduced to health workers and those who have been helped by the RFDS which provides healthcare across 7.69 million square kilometres of Australia.

But it was the large cake which appeared to catch the duke’s eye.

Royal tour of Australia – Day Two
The Duke and Duchess of Sussex shelter under an umbrella (Ian Vogler/PA)

After he and Meghan cut the cake, Harry gave it a sniff and helped himself to some of the icing.

David Charlton, RFDS aviation general manager, said the service would consider the knife a prized possession.

Royal tour of Australia – Day Two
The Duke and Duchess of Sussex unveil a new Royal Flying Doctor Service aircraft (Dominic Lipinski/PA)

He said: “He licked the icing from the knife which in Australian parlance ‘is going straight to the pool room’.”

The couple also met nurses and other staff and volunteers from the service during their visit to the hangar at Dubbo airport.

Mr Charlton said discussion turned to the number of babies which are born mid-air.

He said: “Our staff thought at was quite interesting, given the couple’s current condition.

“The couple found it most amusing, and interesting.

“We all wanted to ask if it was a boy or a girl, but everyone behaved themselves.”