Britain's Prince William wants to "develop" into his royal duties.

Britain's Prince William

Britain's Prince William

The 33-year-old royal - who has two-year-old son Prince George and 11-month-old Princess Charlotte with his wife, the Duchess of Cambridge - has hit back at claims he is work shy, insisting he takes his duty "very seriously".

He said: "I take duty very seriously. I take my responsibilities very seriously. But it's about finding your own way at the right time and if you're not careful duty can sort of weigh you down an awful lot at a very early age and I think you've got to develop into the duty role."

And the Duke of Cambridge has praised his grandmother, Queen Elizabeth - who celebrates her ninetieth birthday tomorrow (21.04.16) - for being a "real guiding example" to him.

He told BBC News: "I think the Queen's duty and her service, her tolerance, her commitment to others - I think that's all been incredibly important to me and it's been a real guiding example of just what a good monarch could be.

"And it's been incredibly insightful for me growing up, watching her leadership in that role.

"I think it's important to grow into a role with the right characteristics and the right qualities, and I think she's exemplified that in everything she's done."