The BBC said she had been commissioned to do the work by Lucy Adams, the BBC's director of HR, and David Holdsworth, the controller of English Regions.

BBC: Russell Joslin death: Lesley Granger heads BBC inquiry

The BBC's Lucy Williamson, in Seoul, says the trouble, as ever, is what the international community can do in response without triggering an even bigger crisis - North Korea is already tied up in layers of sanctions which do not seem to have had any impact.

BBC: North Korea carries out biggest nuclear test