James Ladyman is Professor of the Philosophy of Science at the University of Bristol and Honorary Visiting Professor at the University of York. He has worked extensively in scientific realism, constructive empiricism and structural realism. In 1998 he made the the distinction between epistemic and ontic forms of structural realism and has defended the latter since. Professor Ladyman was awarded the Philip Leverhulme Prize in Philosophy and Ethics in 2005 was awarded the American Library Association’s Outstanding Academic Text Award. He has been the editor of the The British Journal for the Philosophy of Science and Honorary Secretary of The British Society for the Philosophy of Science. He is the author of Every Thing Must Go: Metaphysics Naturalized, Understanding the Philosophy of Science and Arguing About Science.