Stephen Heidari-Robinson led McKinsey & Company's Organization Practice for energy clients in addition to developing the firm's thinking on implementing reorganizations. He served as UK Prime Minister David Cameron's advisor on energy and environment. Stephen has also worked as a vice president at Schlumberger, as head of the corporate program of a charity (Asia House), and in the UK Ministry of Defence. Suzanne Heywood is Managing Director, Exor Group; sits on the boards of a number of companies, including The Economist Group and CNH Industrial; and is Deputy Chair of the Royal Opera House. She started her career in the UK Treasury and then worked at McKinsey & Company, where for several years she led the global Organization Design service line in the firm's Organization Practice.