John Browne, Baron Browne of Madingley

As chief executive of BP from 1995 to 2007, John Browne engineered the mergers with Amoco and ARCO and pushed the company into Russian oil through the TNK-BP joint venture, while also building a renewable-energy business inside an oil major and reshaping how BP approached climate change — a record that earned him the nickname "Sun King." He resigned in 2007 when a legal dispute forced details of his private life and sexuality into public view. He later chaired the Royal Academy of Engineering and sat on the boards of Goldman Sachs and Intel.