Two broadcasters, a folk singer and a science journalist

Available for over a year

Matthew Bannister on Two much-loved broadcasters. We review the influential career of Sir David Frost with two former Directors general of the BBC: Lord Birt and Greg Dyke. And Pete Murray recalls his friendly on air rivalry with the TV and radio presenter David Jacobs. We also remember the folk singer from Newcastle Lou Killen, who had a sex change operation late in life and became Louisa Jo Killen And the journalist David Dickson who set up a website to bring scientific knowledge to the developing world.