Kirsty Young's castaway is the comedian and television presenter Jimmy Carr.
He is the son of Irish immigrant parents and grew up in Berkshire.
Despite being dyslexic, he got good enough A levels to study at Cambridge University. After graduating with a degree in Political Science, and working for a major multinational company in London, Jimmy had what he calls an 'early midlife crisis', during which he lost his Catholic faith and was generally unhappy.
He attended lots of therapy courses in an attempt to find out what would make him happier and eventually set out on the road to becoming a comedian.
He quickly got a reputation for his fierce work ethic, heading up annually to the Edinburgh Fringe, touring with a new show virtually every year, and hosting many a Channel 4 panel show including 8 Out of 10 Cats and the Big Fat Quiz of the Year.
He has also made a name for himself by becoming what he has called "the king of the inappropriate", drawing criticism for making jokes about sensitive subjects.
Producer: Sarah Taylor.