I was educated at Cambridge (BA, 1999 - 2002; MPhil 2007 - 2008; PhD 2008 - 2012), and was a Research Fellow at Sidney Sussex College, Cambridge (2012 - 2013) before taking up my post in Oxford. Between degrees I served as an officer with the Royal Marines Commandos.
||The Philosophy of Trust, ed. P. Faulkner and T. Simpson. Oxford University Press
||Freedom and Trust: A Rejoinder to Lovett and Pettit. Philosophy and Public Affairs 47: 412-24
||Trust, Belief and the Second Personal. Australasian Journal of Philosophy 96: 447-59
||The Impossibility of Republican Freedom. Philosophy and Public Affairs 45: 27-53
||Just War and Robots' Killings (with V. Müller) Philosophical Quarterly 66: 302-22
The centre of my work is on trust, addressing both trust between individuals, and the social and political significance of a culture of trust. I have additional research interests in a variety of applied issues, ethical and political - especially war, technology, and their intersection; and academic freedom - and I am increasingly working on topics in political philosophy.
I co-teach 'Foundations', a core module on the Masters in Public Policy at the Blavatnik School of Government. This looks at the moral and political issues that are involved in policy-making.