John Harris is Sir David Alliance Professor of Bioethics at the Institute of Medicine, Law, and Bioethics, University of Manchester. In 2001 he was the first philosopher to have been elected a Fellow of the Academy of Medical Sciences. He has been a member of the Human Genetics Commission since its foundation in 1999. The author or editor of fourteen books and over 150 papers, his recent books include Bioethics (Oxford University Press, 2001), A Companion to Genetics: Philosophy and the Genetic Revolution, co‐edited with Justine Burley (Blackwell, 2002), and On Cloning (Routledge, 2004).

Søren Holm is Professorial Fellow in Bioethics at Cardiff Law School and Director of the Cardiff Centre for Ethics, Law, and Society. He is also adjunct Professor of Medical Ethics in the Section for Medical Ethics, University of Oslo. He has written on many subjects in bioethics and the philosophy of medicine, and his most recent publications have been on biobanking and on stem‐cell research.