Fortt Knox

Sir Martin Sorrell is arguably the most important advertising executive in the world. As CEO of WPP Group, he oversees a global marketing machine that he's assembled over more than 30 years. His group companies include J Walter Thompson and Ogilvy & Mather, Young & Rubicam, and more than 100 others. Clients include two of every three Fortune Global 500 companies. When I sat down with him for the Fortt Knox podcast, I wanted to talk about his childhood, his career, and the pivotal choices he made. He didn't disappoint.