Jason Knauf was chief executive of William and Kate’s Royal Foundation, stepping down at the end of 2021.

A former aide to the Prince of Wales said he was at his “lowest” after the Princess of Wales was diagnosed with cancer.

Jason Knauf was formerly chief executive of William and Kate’s Royal Foundation, stepping down at the end of 2021, and also previously worked for the Duke and Duchess of Sussex.

Both the King and the Princess of Wales were treated for cancer last year. Kate is now in remission and Charles is having ongoing treatment.

In an interview with 60 Minutes Australia, Mr Knauf said: “Within a couple of weeks, if you’re Prince William, you find out that both your wife and your father have cancer. I couldn’t believe........

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