Prince Harry and Prince William have ruled out a concert to mark the 20th anniversary of their mother's death.

Prince Harry and Prince William

Prince Harry and Prince William

For Princess Diana's 10th anniversary in 2007, the royals held a fundraising concert at Wembley but 10 years later they are keen for a more low-key remembrance and hope that whatever they decide on will celebrate her charity work.

A source told the Daily Mail: "The princes have made clear that this will not be a 'Royal Family' event. They are very much in charge of everything as her sons and everyone, including their father, agrees that this is as it should be.

"There will be nothing on the scale of the memorial concert they held.

"That was a stepping out moment for them as public figures in their own right. Now they want to help people in what they are doing rather than create demand themselves.

"There is a whole generation now that were very young when she died and may not know about what she managed to achieve in such a short life."

Diana was just 37 when she died in a car crash in Paris in 1997 and Harry, 32, recently admitted he buried his grief for a long time afterwards.

He said: "I never really dealt with what had happened. It was a lot of buried emotion. For a huge part of my life I didn't really want to think about it.

"I now view life very differently from what it used to be. I used to bury my head in the sand, and let everything around you tear you to pieces."

Harry set up the charity Sentebale in memory of his late mother and said: "Now, I can see exactly where I want to take it. The fact that I've managed to keep Sentebale going ... for the last 10/11 years has been fantastic because now everything else I'm involved with makes sense to me and I'm just getting started.

"What started as an idea of me turning round and saying, right, I've got a year off, I want to do something really constructive with my life, want to do something that makes my mother proud.

"Someone said, right, go to Lesotho, it's like where the hell is that? Now I can see exactly where I want to take it. I have huge amounts of passion for the causes and interests and charities I'm involved with."