Mr Zervos is Director of Public Prosecutions with the Hong Kong Department of Justice. He is a specialist in human rights and in the prosecution of white collar crime. In 1984, he worked in Australia with the Special Prosecutor's office responsible for the investigation and prosecution of large scale revenue frauds. From 1985, he was Senior Assistant Director of the office of the Commonwealth Director of Public Prosecutions at the Melbourne and Sydney Offices where he was in charge of the Major Fraud Section. From 1989 to 1992, he was General Counsel to the Independent Commission Against Corruption in New South Wales. From 1992 to date, he has worked as Counsel with the Hong Kong Department of Justice, initially attached to the Commercial Crime Unit where he mainly prosecuted white collar crime cases, then as head of Appeals specializing in Human Rights and later as Chief of Staff. In May 2003, Mr Zervos was appointed Senior Counsel in Hong Kong. In 2009, he completed a Masters of Laws (Human Rights) at the University of Hong Kong.

Mr Zervos has conducted the full ambit of trials and appeals in all fields of law. In trial work he has specialized in commercial crime, including credit card and currency frauds, banking and corporate frauds, infringement of intellectual property, money laundering and corruption. In appeal work he has conducted cases involving constitutional law, human rights, administrative law as well as most aspects of the criminal law and law of evidence. He has presented numerous papers and given talks on a variety of legal topics including human rights, appeals, commercial crime, fraud, money laundering, corruption and sentencing.