From Our Own Correspondent: Goodbye to Mark Doyle

In a special essay, the BBC Africa correspondent Andrew Harding pays tribute to Mark Doyle - one of the corporation's most recognised broadcasters, whose name and voice are famous not just across this continent but across the world thanks to his years of reporting.

Photo: Mark Doyle and Umaru Fofana, BBC correspondents, at work in Sierra Leone during 2014 (c) BBC