Prince Harry says his mother would be "proud" of his Heads Together campaign.
The 32-year-old royal spearheads the mental health charity with his brother Prince William and his wife Duchess Catherine, and opened about how he thinks Princess Diana would be more than pleased to see her children helping to tackle the stigma surrounding mental illness in the UK.
Speaking to press at the launch of the London Marathon Expo on Wednesday (19.04.17), the flame-haired hunk said: "I think she would be proud of the campaign, proud of everybody involved, proud of us, but specifically proud of the UK for having this conversation.
"The appetite has always been there, but I think we've all been quite surprised how many people out there have been wanting to talk about their own issues."
He added how he believes his mother - who died in July 1997 after a fatal car crash in Paris - would have been "overwhelmed and hugely encouraged by the fact that the UK, not known for wanting to talk about mental health issues, has suddenly got to this point and it's only taken a year, specifically this week has really energised the whole nation, which is fantastic."
Harry - who is dating 'Suits' actress Meghan Markle - recently opened up about his own battle mental health, and how he almost had a "complete breakdown" when his mother died.
He said: "I can safely say that losing my mum at the age of 12, and therefore shutting down all of my emotions for the last 20 years, has had a quite serious effect on not only my personal life but my work as well.
"I have probably been very close to a complete breakdown on numerous occasions when all sorts of grief and sort of lies and misconceptions and everything are coming to you from every angle."
Heads Together is the chosen charity of the 2017 London Marathon.