Gavin Silbert KC obtained degrees in Law and Classics from the University of Western Australia before undertaking post graduate degrees at the Universities of London and Oxford. Between 1985 and 1990 he was a prosecutor for the Queen before returning to the Bar where he practised in criminal law doing both prosecution and defence as well as administrative and commercial law. He took silk in 2007 and was appointed Chief Crown Prosecutor in 2008 from which he retired in 2018. Since 2018 he has practised concentrating on pro bono briefs and matters of public interest. He acted for many people in connection with Robodebt and has acted without fee for many indigant litigants and citizens oppressed by government and regulatory administrative action.