Gregory is one of 100 Senior Counsels in Singapore and specialises in various spheres of civil and commercial litigation, arbitration, mediation and dispute resolution. He is also a recognised expert in banking and insolvency, as well as charities governance and presently specialises in complex commercial litigation and chancery matters.

Gregory has been consistently recognised by Best Lawyers in Singapore for Insolvency and Reorganisation Law and Litigation since 2010. Among his multiple honours include: being ranked as a Distinguished Practitioner in Dispute Resolution by Asialaw Leading Lawyers (2022), conferred the Pingat Bakti Masyarakat (PBM) in 2022, received the prestigious SAL Merit Award from The Singapore Academy of Law (SAL) in 2024, and recognised as a Leading Lawyer in Dispute Resolution: Litigation by Chambers Asia Pacific 2026. 

Beyond his practice, Gregory is very active in serving the community and has done so for a very long time. Currently, his community commitments include: Chairman of Prison Fellowship Singapore, Charity Council member, Honorary General Secretary on the Board of the National Council of Social Services (NCSS), and also serves as a member of the Ethics Review Committee (NCSS), Board Director at Law Society Pro Bono SG, Trustee at National Youth Fund and Rare Disease Fund, as well as Chairman of the Law Christian Fellowship. Some of his past community engagements include: serving for nearly two decades as President of Club Rainbow Singapore, Founding Director of Singapore Cord Bank, and the longest serving President of the Law Society of Singapore. 

Greg is also President of the Tribunal for the Maintenance of Parents. In recognition of his dedication and judicial temperament in his role at the Tribunal for the Maintenance of Parents, Gregory was awarded the Outstanding Volunteer Award at the Ministry of Social and Family Development (MSF) Volunteer and Partner Awards 2025. 

Gregory graduated from the National University of Singapore (NUS) and was one of the main speakers in the university’s mooting team in 1992 that emerged world runners-up at the 1992 Jessup International Law Moot Competition in Washington D.C.