Jon Snow has been main presenter of Channel 4 News since 1989. He's reported extensively from around the world and was ITN's Washington Correspondent 1983-1987. He reported the revolution in Iran, the Soviet Invasion of Afghanistan, the release of Nelson Mandela, the fall of the Berlin Wall and more recently the Earthquakes in Haiti and Japan. He has interviewed Reagan, Gorbachev, Thatcher, Blair, Monti, Cameron, Annan, Ban ki Moon and many other notable figures. He is a Chair of the News Horizon Youth Centre (where he worked as Director before he became a journalist) - the centre is a drop-in resource for homeless and vulnerable teenagers in Central London. He is Chair of the Media Trust, and has served as a Trustee of the National Gallery and the Tate. He's on the Tate Modern council, and is a Trustee of the Ashmolean in Oxford. He's active on Twitter (@jonsnowc4) and writes a regular blog - Snowblog.