I am a Professor of Philosophy at the University of Oxford.

My current research focusses on various issues in ethics. My interests include: foundational issues in consequentialism ('global' and 'two-level' forms of consequentialism), issues of aggregation (utilitarianism, prioritarianism, egalitarianism and anti-aggregationist approaches), population ethics, effective altruism, the interface between ethics and economics, the analogies between ethics and epistemology, and formal epistemology.