Dr Hooper has degrees in medicine, philosophy and medical education. He also holds a PhD in law.

Dr Hooper is currently a Reader in Global Health Ethics and Law at City St George's, University of London. He is the Associate Dean (Postgraduate Taught Studies and Continuing Professional Development) at the School of Health and Medical Sciences in 2025 and the academic co-lead for the MRC funded Doctoral Training Partnership MRC DTP LID between City St George's, University of London and the London School of Hygiene and Tropical Medicine. Previously, Dr Hooper was the Head of the Graduate School, the Head of Section for Humanities, Ethics, Law and Global Health, the Course Director for the MSc in Global Health, and the Course Director for the MA in Medical Ethics, Law and Humanities.

Dr Hooper is a trustee of the Institute of Medical Ethics IME and he was the founding chair of the IME Research Committee. He was the acting Chair of the IME for about a year and he is currently the Chair of the IME Education Committee. 

Dr Hooper participates in a variety of public engagement activities and he often gives interviews on radio and television in both Welsh and English. For many years he was also a regular columnist and blogger for The Conversation

Dr Hooper’s primary research interests are in global health ethics and public health ethics. His PhD focused on personal responsibility for health.

Dr Hooper has published on a wide variety of topics including the global regulation of tobacco, the ethical implications of HIV self-testing and the legality of detaining mental health patients.

Dr Hooper is heavily involved in all aspects of teaching, assessment and curriculum development at City St George's, University of London.

As the Associate Dean (PGT & CPD) he plays a key role in assuring the quality of the postgraduate teaching provision at the university and he is responsible for enabling other academics to create innovative new postgraduate courses. 

Dr Hooper regularly delivers lectures, seminars and tutorials to students on a wide range of different courses and he is actively involved in assessing these students too.