Prince Harry gives rare interview about his grandmother Queen Elizabeth II

(CBS/AP) Prince Harry gave a rare interview about his grandmother, Queen Elizabeth II, saying that despite her age she continues to work hard and that she couldn't do her job without her husband Prince Phillip.

Pictures: Prince Harry
Pictures:Queen Elizabeth II

"These are things that, at her age, she shouldn't be doing, yet she's carrying on and doing them," he said in an interview with The Radio Times published Tuesday.

"Regardless of whether my grandfather seems to be doing his own thing...The fact that he's there - personally, I don't think that she could do it without him, especially when they're both at this age," Harry added.

At 85, Elizabeth is Britain's second longest-serving monarch after Queen Victoria. Her 60th year on the throne, the Diamond Jubilee, will be celebrated this year in major events both in Britain and in Commonwealth nations around the world.

Prince Phillip, who turned 90 last June, has supported the monarch in nearly all of her duties and overseas trips. While he had expressed a desire to scale down his royal engagements, last year the pair still made a historic trip to Ireland, hosted a state visit by U.S. President Barack Obama and visited Australia on a 10-day tour.

Phillip suffered a health scare before Christmas, but has recovered after undergoing a successful coronary stent procedure.

Harry's comments were part of a series of interviews conducted for an article on the queen published in the Radio Times.