He was also admitted to bar in the Bahamas and Dominica, 1984 and 1993, respectively. He is a member of the bar associations of all three countries. In Jamaica, Justice Ducille served as Clerk of the Court with responsibility for criminal prosecution for the Parish of Portland. He additionally served as State Prosecutor in the Office of the Director of Public Prosecutions where he was in charge of criminal prosecution and represented the state in the Court of Appeal. He also prepared and presented extradition cases between the United States and Jamaica. Between 1984 and 1997, Justice Ducille acted as Solicitor General, served as Chief Prosecutor and Attorney General in Bahamas; Director of Public Prosecutions in Dominica and Chief Magistrate in Antigua and Barbuda. In 1997, he began his private practice.