Miranda has spent the past 20 years working with John Malone at Denver-based Liberty Media, the global leader of the broadband cable industry. Over that period Miranda negotiated and managed joint ventures on Liberty’s behalf across Europe and Asia Pacific, most notably in Japan, where she led the creation and development of the Jupiter Telecommunications group of companies. Having successfully negotiated the multi-billion dollar sale of Liberty’s Japanese interests in early 2010, Miranda retired from her executive role with the company and was invited by Dr Malone to join the Board of Liberty Global Inc as a Non-Executive Director. In January 2018 Miranda also joined the board of Liberty Latin America.
Since retirement, Miranda has built a UK-based portfolio. She was the Chair of Waterstones from 2011 to 2016, and served as Non-Executive Director of Marks & Spencer plc from 2012 to 2018. Miranda is a Trustee of the Institute for Government and was the Lead Non-Executive Director on the Foreign and Commonwealth Office Board from March 2017 to July 2020. She is Deputy Chair of both Garsington Opera and the Royal Shakespeare Company. Miranda’s close involvement with CAMFED and nomination to the role of Chair reflects her profound interest in international development and the education and empowerment of women.