The Queen Elizabeth Diamond Jubilee Trust was an important part of the late Queen's legacy. Sophie took on the role of Vice-Patron in 2015, three years after the Trust was created to mark the Queen’s 60 years of service to the Commonwealth. She became heavily involved in its work to tackle avoidable blindness, travelling to Malawi, Bangladesh, and India to see the projects firsthand. As per Town & Country, Sophie said in a speech during a reception of the Trust, “Mama, when I have returned from my travels, I have been so proud to share with you the work I have witnessed being carried out under the umbrella of the Queen Elizabeth Diamond Jubilee Trust and the care of so many people working so hard to save and cure sight.”