The Nuffield Council on Bioethics is a UK-based independent charitable body, which examines and reports on ethical issues raised by new advances in biological and medical research. The Council produces independent advice on topics as diverse as biofuels, organ donation, dementia and the police DNA database. Established in 1991, the Council is funded by the Nuffield Foundation, the Medical Research Council and the Wellcome Trust. Follow us on Twitter: @nuffbioethics