4. Peter York, author, cultural commentator and management consultant

Peter York is best known for his astute and acerbic observations about British culture and life. For more than 40 years, he has drawn on his background in market research to spot and analyse trends and tribes, from the Sloane Ranger to the hipster to the interior decor of dictators' homes. In this entertaining and wide-ranging conversation, he talks about the cult of authenticity, why you should never call yourself a "creative" and why corporate social responsibility is a con.