Philanthrocapitalism is the current buzzword used to describe the recent resurgence in big giving by billionaires. Gates ‘Giving Pledge’ is set to raise $115bn if all participants fulfill their pledge to give half their fortunes to charity. However, while these are donations by American billionaires, UK donations of this kind could have a substantial impact. In this week’s Guardian, Matthew Bishop and Michael Green identify potential UK billionaires who they think should be joining the Gates effort. High up on the list is Sir Richard Branson who despite noble efforts in international diplomacy (over Iraq) has never given away large amounts of his personal fortune. Is he the individual who could kick start UK commitment to the pledge?