Richard Koch is the author of 15 highly acclaimed books, including the "The Financial Times Guide to Strategy "and the bestselling 80/20 trilogy. As well as lecturing and broadcasting, he is an extremely successful entrepreneur and investor, (ventures include Betfair and Filofax) Leo Gough is the author of 23 books on personal finance and investment, including "25 Investment Classics", and "How the Stock Market Really Works" 4/e.