Get our daily royal round-up direct to your inbox Sign up Thank you for subscribing We have more newsletters Show me See our privacy notice Invalid Email

Prince William is a Duke and second in line to the throne - but he just proved that even he's not immune to a right telling off from his Grandma.

Much like those fear-inducing memories we might have of our own grandparents, one particular moment has stuck in his mind for life - as he recalled in an interview for a documentary to celebrate the Queen's birthday.

Speaking to Sky News for a documentary called The Queen At 90, William recalled how an accident landed him in hot water with Her Majesty after he almost 'squashed' his cousin Zara Phillips .

He explained how he and his cousin Peter - Zara's brother - got into trouble after riding a quad bike at Balmoral.

William said: "We were chasing Zara around who was on a go-cart, and Peter and I managed to herd Zara into a lamppost.

(Image: Getty)

"And the lamppost came down and nearly squashed her, and I remember my grandmother being the first person out at Balmoral running across the lawn in her kilt.

"(She) came charging over and gave us the most almighty b******ing, and that sort of stuck in my mind from that moment on."

Read more :

William also opened up about the Queen's presence in his life as a 'strong female influence' after he lost his mother at a young age.

He said: "It's been particlularly important to me that I've had somebody like the Queen to look up to and who's been there and who has understood some of the more, um, complex issues when you lose a loved one...

(Image: WireImage)

"So she's been incredibly supportive and I've really appreciated her guidance."

The Duke of Cambridge also defended himself over criticism that he does not complete enough royal duties.

Speaking to the BBC, he said he was focusing on being a father and an air ambulance pilot but would be the "first person to accept" duties when it came for his grandmother to hand over responsibilities.

The documentary will be shown on Sky News at 9pm on Wednesday.