Mr Justice Robert Tang was called to the English and Hong Kong Bar in 1969 and 1970 respectively. He became a Queen’s Counsel in 1986, a Senior Counsel in 1997, a Judge of the Court of First Instance in April 2004, a Justice of Appeal in January 2005, a Vice President of the Court of Appeal in November 2006. He was appointed a Permanent Judge of the Court of Final Appeal in October 2012.

Upon his retirement as a Permanent Judge on October 25, 2018, he became a Non-Permanent Judge of the Court of Final Appeal. He practises as an Arbitrator and Mediator.

Whilst in private practice, Mr Tang was at various times, the Chairman of the Hong Kong Bar Association, the Criminal and Law Enforcement Injuries Compensation Boards, the Independent Police Complaints Council, the Town Planning Appeal Board, the Takeovers and Mergers Panel, and the Securities and Futures Appeal Panel. He was also at various times, a member of, amongst others, the Exchange Fund Advisory Committee of the Hong Kong Monetary Authority and a non-Executive Director of the Mandatory Provident Fund Schemes Authority.

Mr Tang is the Chairman of the Standing Committee on Legal Education and Training.