Peter Phillips reflects on growing up with princes William and Harry

By Gemma Strong

Peter Phillips is one of the very few who calls the Queen his grandmother, and he has opened up about what it was like to grow up in such unusual circumstances. The monarch's eldest grandson, who counted princes William and Harry as childhood playmates, appeared on Good Morning Britain to discuss the Queen's 90th birthday celebrations in June and what it was like to grow up royal.

"I guess it's a little strange, but if you're growing up with that sort of thing, there's never a moment when you go, 'oh wow'," said Peter, 38.

Peter Phillips appeared on Good Morning Britain to talk about his grandmother, the Queen.

"We had great fun growing up on our holidays, going to stay with her at Sandringham, Balmoral and Windsor, and we were incredibly lucky to share a lot of our childhood time with her.

"She's such an inspiration, not only to the country but to us as a family. You know, her work ethic and her dedication is something that I think the whole family has always aspired to, at least get somewhere near."

Peter, the son of Princess Anne, also spoke about his playful childhood with his sister, Zara Phillips, and their cousins, including Prince William and Prince Harry.

"We had a lot of fun and there was a lot of space for kids to run around, and it wasn't just us – it was the Wales's (William and Harry), Freddie and Ella Windsor (Prince and Princess Michael of Kent's children), and the Gloucesters (Alexander Windsor, Earl of Ulster, Lady Davina Lewis and Lady Rose Gilman, the children of the Queen's cousin, Prince Richard, Duke of Gloucester).

Peter, Prince William and Prince Harry playing together at Sandringham in 1988.

"So there was quite a gang of us growing up in that age and it was a lot of fun. We caused quite a bit of mayhem and chaos but, fortunately, I don't think we broke too much!"

The Queen will celebrate her 90th birthday on June 12, when she will be joined by 10,000 guests in what has been billed as the "biggest street party" the United Kingdom has ever seen.

Peter is helping to organize the event through his company SEL, and recently told Hello! that the monarch is "really excited" about the landmark occasion.

"She said, 'I've heard you're up to something!'" he said. "The conversations I've had, she is really excited about. She thinks it's a great idea."

HELLO! Canada magazine is available for your tablet and smartphone. Get HELLO! Canada, PEOPLE, Vanity Fair and over 100 more of the world’s best magazines for one low monthly price at Texture by Next Issue. CLICK HERE to sign up for a free trial.