James Ladyman is a professor of philosophy at the University of Bristol and honorary visiting professor at the University of York. In 2005 he won the Philip Leverhulme Prize in Philosophy and Ethics. He was also awarded the Choice (American Library Association) Outstanding Academic Text Award for Understanding Philosophy of Science. Between 2004 and 2011 he was co-editor (with Professor Alexander Bird) of the British Journal for the Philosophy of Science, for which he was previously a deputy editor and assistant editor. From 2003–2007, he has held the position of Honorary Secretary of the British Society for the Philosophy of Science.
Ladyman is interested in most areas of philosophy, but his work has primarily been in general philosophy of science and philosophy of physics. He has worked extensively on scientific realism, constructive empiricism and structural realism (he made the distinction in his 1998 paper between epistemic and ontic forms of structural realism and he has defended the latter). He has always been interested in the philosophy of physics, especially quantum mechanics, and works specifically on identity and individuality in quantum mechanics and time-symmetric quantum mechanics. His research also covers scientific representation, physicalism, the relationship between the special sciences and physics, naturalised metaphysics, the philosophy of information and computation, and the philosophy of mathematics. He is author of three important monographs: Understanding Philosophy of Science (with Don Ross, Routledge, 2002), Everything must Go: Metaphysics Naturalized (Oxford University Press, 2007), and What is a Complex System (Princeton University Press, 2018). His many articles have been published in prestigious journals such as British Journal for the Philosophy of Science, Philosophia Mathematica, Studies in History and Philosophy of Modern Physics, European Journal for Philosophy of Science, Philosophical Studies, Australasian Journal of Philosophy, Synthese, Erkenntnis, Philosophy of Science, and Philosophical Quarterly.