James Goudkamp is Professor of the Law of Obligations at the University of Oxford and a Fellow and Tutor in Law at Keble College, Oxford. He is the author or editor of nearly 150 publications. His work is focused on tort law but extends to other parts of the law of obligations. Much of his writing is concerned with defences to liability although he has also written about a wide range of other topics. Donal Nolan is Professor of Private Law in the University of Oxford, and Francis Reynolds and Clarendon Fellow and Tutor in Law at Worcester College, Oxford. Donal's research is focused primarily on the law of tort, and he has a particular interest in the law of negligence, the law of private nuisance and the interface between tort law and public law.