Do the world's richest individuals owe anything to the societies within which they flourish? Is the notion of 'giving back' a choice or a moral obligation? As part of the BBC’s Richer World season Hardtalk speaks to one of Britain's wealthiest men, the billionaire John Caudwell. He made his fortune out of mobile phones and now divides his time between backing new businesses and philanthropy. What are the ingredients for a healthy capitalist society?(Photo: John Caudwell at the Caudwell Children The Legends Ball in Battersea, London. Credit: Gareth Cattermole/Getty Images)