Gemma is Co-Chair of the World Economic Forum’s Global Future Council on Platforms and Systems Leadership and serves on the Board of the Jo Cox Foundation. She was appointed Change.org’s Chief Global Officer in January 2016, responsible for the company's global general management, and was previously Executive Director of Crisis Action where she received the 2012 MacArthur Award for Creative and Effective Institutions and the 2013 Skoll Award for Social Entrepreneurship. In 2011, the World Economic Forum selected her as one of their Young Global Leaders. CNN named her as one of their inspirational women for 2014 and she became a Yale World Fellow in 2015. She was Chair of the Helen Bamber Foundation and on the founding board of 38 Degrees.