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Our Trustees


Mary Margaret McCabe (‘MM’) works on ancient philosophy, on ethics and on the philosophy of medicine; she has published mostly on Plato, but also on the Presocratics, on Aristotle and on the Stoics, as well as on topics in contemporary ethics and medicine. 

Her interest in prison education is of long standing; her mother was a criminologist, her husband is a judge; and her early research was on the philosophy of punishment.

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Bill Brewer works on philosophy of mind, metaphysics, and epistemology: in particular on the metaphysics and epistemology of perception and its objects. 


He is a passionate believer in generous-spirited rehabilitation in prisons and has been involved in musical performances, book groups, recovery from addiction, mentoring and letter-writing, and now philosophy in prisons over a number of years.

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Tom Harrison is a recently retired solicitor who sat as a Deputy District Judge in the County Court (Civil) in East Anglia from 2000 to 2020. 


He practiced criminal law for the whole of his career appearing as an advocate and acting as a duty solicitor. In the course of his professional career he has represented numerous prisoners.

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James Chamberlain is a Teaching Associate at the University of Sheffield, teaching modules on moral philosophy, political philosophy, and the philosophy of education. While in his 30s, James studied for a PhD in philosophy on a part-time basis at the University of Nottingham. During this time, he initially worked as a trainer in children's services, first in a London local authority and then in an international NGO, before later teaching philosophy at Nottingham. He was the Research Associate at Philosophy in Prison for a year during 2021-2022, and he started delivering philosophy sessions in prisons in early 2022. His philosophical research focuses on moral philosophy and the philosophy of David Hume.

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Mike Coxhead has been doing philosophy in prisons since 2016: first on behalf of King's College London, where he established the London Philosophy in Prison project, and then latterly with Philosophy in Prison. He has worked in a range of prisons, including Belmarsh, Brixton, Downview, and Wandsworth. Mike's philosophical research focuses on ancient Greek philosophy and epistemology. He has previously taught at King's College London, Birkbeck, and Queen Mary University of London. Mike is currently a Visiting Research Fellow at King's and a Policy Advisor at the Department for Transport.

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