A founder presenter on Al Jazeera, David hosted all its flagship programmes, including the Newshour, Inside Story and the channel's US election specials.
He brings a wealth of experience, having also presented for many years with Sky News and ITV Westcountry. David was also US correspondent for TV-am, spending five years in Washington DC.
Business news has been among his specialisms and David has been in high demand on the corporate circuit as a conference host, moderator and after-dinner speaker, particularly in the Middle East.
Hillary Clinton, Angela Merkel and the Emir of Qatar are just some of the high-profile names he's worked with.