Click here to really a fascinating post on the history and usefulness of the Gini coefficient, which is the standard way to measure income inequality (hat tip - Graham Brownlow). There is a really good map in the post which allows you to click on a country and find out its current Gini score as calculated by the CIA.
Michael Aldous and I had our book The CEO: The Rise and Fall of Britain's Captains of Industry published a few weeks ago. You can find out more about it and buy it at Cambridge University Press's website . It is also available at Amazon , Waterstones , and Barnes & Noble . The CEO has already been reviewed in The Sunday Times , The Observer and Financial Times .