Roger Cotterrell, Anniversary Professor of Legal Theory at Queen Mary, was invited to give the prestigious annual Petrazycki Lecture in Legal Theory at the University of Warsaw, Faculty of Law on 22 May 2014. The topic of the lecture was ‘Legal Authority in a Transnational World’ [PDF 416 KB]. Previous lecturers have included such world-leading legal philosophers as Joseph Raz, John Finnis and Neil MacCormick. The occasion drew academics from Cracow and Lublin as well as Warsaw, and the text was published both in English and in Polish translation in a 60 page booklet produced for the occasion. While at the University of Warsaw Professor Cotterrell also gave an informal seminar, attended by legal academics and postgraduate students, on ‘The Role of the Jurist’.