Dr Letwin is a Lecturer in Law. He convenes the Tort Law module and teaches Public Law. 

His main areas of interest are Human Rights Law, Public Law, Jurisprudence, Environmental Law and Tort Law. His work has been published in a number of leading law journals, including the Human Rights Law Review, Public Law, the European Human Rights Law Review, and the ECHR Law Review. He has also published case notes in the Modern Law Review and the Cambridge Law Journal. 

Dr Letwin completed his PhD at KCL. His thesis was entitled ‘A Theory of the Moral Foundations of the European Convention on Human Rights’. Before coming to Lancaster in September 2023, he was the judicial assistant to the Senior President of Tribunals in the Court of Appeal, and a Visiting Lecturer at KCL. Before his PhD he completed his LLM at UCL and his LLB at KCL, and was called to the Bar at Middle Temple. 

Dr Letwin’s current research concerns four main themes: (1) climate change litigation in ECtHR; (2) subsidiarity in the jurisprudence of the UK courts and the ECtHR; (3) sources and standards of legitimacy for the ECtHR; and (4) the philosophical basis of the doctrine of proportionality. As well as working on projects related to these themes, Dr Letwin is also working on the publication of his thesis as a monograph. 

In his spare time, Dr Letwin is a keen rock climber, ice climber, and alpinist, and is a member of the Alpine Club.