In June 2019, Sarah became the patron of Natasha Allergy Research Foundation, an organisation founded in honour of Natasha Ednan-Laperouse, who died in 2016 due to an allergic reaction after consuming a sandwich. The Duchess, whose own paternal uncle died following an allergic reaction, was asked by Ednan-Laperouse's parents to become their charity's patron. The organisation is working on a bill called "Natasha's Law", which "requires all food businesses in England and Northern Ireland to list every ingredient in their pre-packaged foods". Later in July, she became an ambassador for the technology infrastructure company Pegasus Group Holdings. The Duchess was chosen to initiate "the company's philanthropic endeavors" as they develop an "off-grid renewable energy data center".