In 2007, Sarah joined the Advisory Council of the Ophelia Project, an American initiative aimed to support people dealing with relational and other non-physical forms of aggression. In 2008, the Duchess became patron of Humanitas, a charity focused on providing children with education, healthcare and family support. In the same year, she became an ambassador for New York mayor Michael Bloomberg's anti-poverty campaign. In 2010, the Duchess became a supporter of the Mullany Fund, whose aim is to support British students wishing to study medicine or physiotherapy. In 2011, the Duchess became the global ambassador for Not For Sale, a charity focused on human slavery. In 2013, the Duchess, along with her former husband, the Duke of York and their daughters, Princesses Beatrice and Eugenie, founded Key To Freedom, a business structure for women in vulnerable situations in India who can sell their wares through the British retailer Topshop. In 2014, the Duchess was appointed an ambassador for the Institute of Global Health Innovation at Imperial College London. In 2015, the Duchess revealed her connection with India and polo when she attended as a chief guest of HVR Baroda Cup in New Delhi under the invitation of Harshavardhan Reddy, chairman of HVR Sports.