Ruth was called to the NSW Bar in 2006 and appointed Senior Counsel in 2017. She appears in competition, commercial, constitutional and corporate criminal matters. She appears for listed companies (Volkswagen, Apple, Tabcorp, BlueScope) energy companies (AGL, Origin), media companies, (TodayFM, Seven) and government instrumentalities (ACCC, NCC, ASIC). Ruth won the Glasgow University medal in law, received a doctorate from Balliol College, Oxford, has been a Visiting Scholar, Columbia University and a Visiting Fellow at New College, Oxford. She is a Fellow of the Australian Academy of Law and an Assistant General Editor of the Australian Law Journal.