Prince Harry and William honor Henry Worsley a year after his death: Photos from their day out with Kate Middleton

For their second engagement of the day, Prince Harry and Prince William attended the inaugural Endeavour Fund Awards. During the evening ceremony, their Royal Highnesses and the Endeavour Fund honored Henry Worsley, who tragically died in January 2016 while attempting to cross the Antarctic continent solo and unsupported. The Duke of Cambridge told the attendees, "Tonight, as we look back on everything that has been achieved, we must remember that a lot of these successes have been supported by the funds raised through Henry’s herculean efforts. The best way that we can thank Henry, the best way we can honor his memory is to create a legacy. The award of a prize in his name, is but a small part of this legacy, a gesture offered to show how much Henry meant to us. A much more significant and meaningful legacy can be fulfilled by you; the community for whom Henry sacrificed so much." Photo: Twitter/@kensingtonroyal

William and Harry spoke with guests ahead of the ceremony. During his speech, Prince Harry also noted: "With support from the Endeavour Fund, they have joined teams, established strong support networks and discovered new passions. Using the power of sport, this community has helped themselves to carve out a new life, a new direction and a new definition of self - proving to themselves and everyone else that beyond injury, they can still achieve the extraordinary." Photo: Twitter/@kensingtonroyal

Prince Harry and the Duke of Cambridge met with Henry Worsley's family: his daughter Alicia, widow Joanna and son Max during the inaugural Endeavour Fund Awards ceremony. Photo: Frank Augstein - WPA Pool/Getty Images

Prince William with the help of Henry Worsley's children presented Neil Heritage with the special prize during the evening affair.Photo: Frank Augstein - WPA Pool/Getty Images

Back to work! The royal trio, Prince William, Kate Middleton, and Prince Harry attended the briefing announcing upcoming plans for their Heads Together organization at the Institute of Contemporary Art in London. Photo: Stefan Wermuth - WPA Pool /Getty Images

For her second engagement of the year, Kate wore the "Evita" dress by Erdem. The Duchess paired the dress with burgundy shoes and a matching clutch. Photo: Danny Martindale/WireImage

Harry offered a thoughtful ear during the Heads Together briefing. Photo: Stefan Wermuth - WPA Pool /Getty Images

William spoke to guests ahead of his speech during the royal trio's Heads Together briefing. Photo: Stefan Wermuth - WPA Pool /Getty Images

This time around, William, Kate and Harry opted not to wear the Heads Together headbands, but that didn't stop Kate from helping attendee Jon Salmon with his. Photo: STEFAN WERMUTH/AFP/Getty Images

Prince William asked attendees to offer an ear to someone willing to share their struggle with mental illness. "Talking to someone else is a positive and confident step to take – but for too long it has been a case of 'Keep Quiet and Carry On'. As a result, too many people have suffered in silence for too long, and the effects of this can be devastating." "It is no exaggeration to say that conversations – simple conversations – can be life-changing: in a workplace, in your kitchen at home, with a friend, family member or colleague. And that's what Catherine, Harry and I want to do – we want more people to be having those conversations." Photo: Twitter/@kensingtonroyal

Prince Harry acknowledged the changes in the stigma that comes with mental health. "It has been unbelievably encouraging to see that attitudes towards mental health across the country are beginning to change. In the past, the phrase 'mental health' would be translated to mental illness. But thankfully that is changing!"Photo: Twitter/@kensingtonroyal

Kate took the stage to stress the importance of talking to others about mental health issues. "We have seen that two heads are better than one when dealing with a mental health problem," she told the audience. "Yet, the challenge that so many people have is not knowing how to take that first step of reaching out to another person for help. Admitting that they are not coping. Fear, or reticence, or a sense of not wanting to burden another, means that people suffer in silence – allowing the problem to grow larger and larger unchecked." Photo: Stefan Wermuth - WPA Pool /Getty Images

Kate spoke with Sian Williams, who will be participating in this year's London Marathon after fighting breast cancer and writing a book on mental health. During the outing, the news anchor spoke about the importance of William, Kate and Harry's involvement with Heads Together and speaking out about mental health. "The amount of passion the royals have for this cause isreally impressive," she said during the event. They have researched it, they have personal experience because of the jobs they do - William taking about his role in Air Ambulance and Harry and his role in the military. You get a very keen sense it's something they have been aware of for a very long time and they feel as though they can help get the talking going." Photo: Twitter/@AdeleRoberts