Prince William has vowed to keep a new gift out of the reach of his son.

Prince William and the Duchess

Prince William and the Duchess

The 35-year-old royal and his wife, the Duchess of Cambridge, made a trip to a whistle factory in Birmingham on Wednesday (22.11.17) and they were both given brass whistles to take home as a memory of their trip.

After receiving his gift, the Prince told the Duchess, according to PEOPLE: "Don't show that to George - we'll never get any peace!"

The gift was handed to the Prince - who has Prince George, four, and Princess Charlotte, two, with his wife - and the Duchess at the end of a busy day of official engagements in the English city.

Their visit to Birmingham came shortly after Prince William revealed he has been forced to put his love for motorbikes "on the back-burner" because of his young family.

The British royal - who is expecting his third child with his wife Catherine, Duchess of Cambridge - discussed his love of bikes with triple World Superbike champion Jonathan Rea on Tuesday (21.11.17).

Jonathan - who was handed his MBE by the royal - said: "I know he's a bit of a motorcycle fan himself. We talked about his bikes and the fact that he has put it on the back-burner a little bit because of his children now."

The future King has been a keen biker from a young age, and had previously been known to own bikes including a 1199cc Ducati.

In 2008, Prince William and his brother, Prince Harry, took part in a motorcycle rally across Africa to raise money for a variety of charities including Sentebale, which was jointly founded by the younger sibling.