Diaspora: a scattered population with a common origin. Diaspora engagement is changing the fortunes of nations and exerting huge influence over many aspects of public life and economic development. Moreover it is claimed that 20 non-resident Welsh people could bring wealth and prosperity to Wales. So what is, as The Economist puts it, the ‘Magic of Diasporas’? Finch – former Head of Migration at IPPR, Meyer – entrepreneur, investor and business advisor, and Warren East – newly appointed CEO of Rolls-Royce and former CEO of ARM Holdings, talk to Guto Harri.