Presented by Jenni Murray. Last Friday Yvette Cooper was appointed to the shadow cabinet as Foreign Secretary. She talks to Jenni about the challenges ahead. The solicitor Gareth Peirce made her name representing the likes of the Birmingham Six and the Guildford Four. As her first book is published, she reflects on her views on justice post 9/11. And, Elizabeth David was one of the most acclaimed cookery writers of the 20th century. So what makes an influential cook?