Professor David Johnston is an academic and practising lawyer. From 1993 – 1999 he was Regius Professor of Civil Law, University of Cambridge, and has held visiting Professor positions at Pantheon-Sorbonne University, France, and University of Osaka, Japan. Although David no longer teaches law, he maintains his interests in legal history, especially classical Roman law and in seeking to understand the rules of Roman law in their social and economic context. David's legal practice focuses on public law, in particular constitutional issues, human rights and freedom of information. In 2005, he was appointed as Queen's Counsel. From 2015-2020 he was a Commissioner of the Scottish Law Commission, the statutory body charged with promoting reform of the law of Scotland. He is an Honorary Professor in Edinburgh University Law School.