“strong in analysis and research”
“practical and helpful advice in dealing with difficult situations”
Legal 500 Asia-Pacific 2025: Administrative and Public Law – Leading Junior
Isabel Tam graduated with a first class LLB and with distinction in her LLM. She was awarded the Bar Scholarship in 2012. Her practice has an emphasis on public law, family law, and regulatory matters. She also has an MA in competition law with distinction in the examination component, and was seconded to the Competition Commission.
She has appeared as sole counsel in the Court of Appeal, the Court of First Instance, the District Court and the Magistrates’ Courts. She has also appeared in the Court of Final Appeal.
Recent highlights of Isabel’s experience include: NH v TCAB [2024] 6 HKC 765 on the treatment of the principle of res judicata in administrative decision-making; NF v R [2023] 5 HKLRD 58, a breakthrough for same-sex parents, granting a declaration of “parentage at common law” to a same-sex couple; and AA v BB [2021] 2 HKLRD 1225, which has been hailed as a landmark victory for the LGBTQ community, granting rights to a separated same-sex couple who had co-parented children during their relationship.
Isabel successfully resisted the Inland Revenue’s appeal before the Court of Appeal in Koo Ming Kown & Anor v The Commissioner of Inland Revenue [2021] 3 HKLRD 642, representing two company directors charged to additional tax (led by Mr Denis Chang SC). This is Hong Kong’s first ever case to deal with the third party’s liability for additional tax by reason of “incorrectness” in the company’s return.
Isabel’s experience also includes:
Administrative and Public Law
Judicial reviews and hearings relating to the Small House Policy, the “Co-location Arrangement”, the 3rd airport runway, immigration decisions, disciplinary decisions, administrative tribunals, and more.
Family Law
Children matters, ancillary relief, anti-suit injunction, harassment-related proceedings, and more.
Regulatory and Tax Matters
In regulatory matters: representing the SFC in disciplinary proceedings and in trial, advising on competition law, advising on listing rules, representing respondent and complainant in professional misconduct cases, and more. In tax matters: advising on tax treatment of profit share incentive in the employment context, advising on stamp duty liability in property transactions, representing the successful appellant against the Inland Revenue Department in appeals regarding director’s liability for additional tax, and more.
Land Law
Trials on adverse possession, trust claims over property, disputes over common parts, conveyancing disputes, unauthorized building works, and more.
International Work
Her legal experience outside Hong Kong includes working on a state-to-state international arbitration, researching at the International Environmental Law Research Centre in Kenya and a summer judicial clerkship at U.S. federal court. She was also called to the Bar in New York.
Pro Bono Work
She regularly undertakes pro bono work, including advising non-profit organizations and acting for litigants on a pro bono basis. She is also interested in environmental law, and has advised and published on the ivory trade and trade in endangered species.
• Barrister (Hong Kong) (2013)
• LLB (First class), University College London (2010)
• LLM (Distinction), Georgetown University (2011)
• PCLL, University of Hong Kong (2012)
• MA in EU Competition Law, King’s College London (2017)
• Bar Scholarship (2012)
• Charles Ching Memorial Scholarship (2012)
• Dean’s List (2011)
• Georgetown Global Teaching Fellowship (2011)
• Georgetown Law Center best paper in international criminal law (2011)
• International Bar Association Asian Regional Forum Scholarship (2014)
• Inter-Pacific Bar Association Scholarship (2017)
• Vice-chair (2019 – 2020), Standing Committee on Young Barristers, Hong Kong Bar Association
• Member (2022 – present), Committee on Constitutional Affairs & Human Rights
• Member (2018 – present), Standing Committee on Equality and Diversity, Hong Kong Bar Association
• Member (2020 – present), Standing Committee on International Practice, Hong Kong Bar Association
• Part-time Lecturer, School of Law, City University of Hong Kong (Academic Years of 2018/19, 2019/20; 2023/24)
• Part-time Judicial Associate (General) in the Judiciary (2021, 2022 & 2023)
• Hong Kong Civil Procedure (2015 – present), contributing editor• Bullen & Leake & Jacob’s Hong Kong Precedents of Pleadings (2nd ed) (contributor, chapter on Competition Law)
• Halsbury’s Laws of Hong Kong (volume on Judicial Review), contributing author
• Hong Kong Construction Law (Issue 39), contributor
• Environmental Impact Assessment Ordinance, Cap 499 (Annotated Ordinances of Hong Kong) (2017), author• Protection of Endangered Animals and Plants Ordinance, Cap 586 (Annotated Ordinances of Hong Kong) (2019), co-author• Public Health and Municipal Services Ordinance, Cap 132 (Annotated Ordinances of Hong Kong) (2019), co-author• Water Pollution Control Ordinance, Cap 358 (Annotated Ordinances of Hong Kong) (2019), author• The Trade In Live Reef Food Fish-Going, Going Gone (2017), co-author
Administrative and Public Law
NH v TCAB [2024] 6 HKC 765
Treatment of principle of res judicata in administrative decision-making
NF v R [2023] 5 HKLRD 58
Grant of declaration of “parentage at common law” in the context of parents in a same-sex relationship
Mutebi Roy Doreen v Torture Claim Appeal Board & Ors [2022] HKCA 294
Asylum seeker claiming affected by practice of “widow inheritance” (a form of forced marriage). Appeal allowed, reversing refusal of leave to bring judicial review proceedings.
Kwok Cheuk Kin & Anor v Director of Lands & Ors (2021) 24 HKCFAR 349
Judicial review of the constitutionality of the Small House Policy
Kwok Cheuk Kin & Anor v Director of Lands & Ors (2021) 24 HKCFAR 220
Whether allow waiver of security for costs (sought in the total amount of $ 4.8 million) of appeal to the Court of Final Appeal
Kwok Cheuk Kin & Anor v Director of Lands & Ors [2021] 3 HKLRD 411
Whether Public Interest Litigation exception may be relied upon by an applicant against a non-government entity
Chan Tsui Yan v Social Workers Registration Board & Ors [2019] HKCA 279
Representing the Social Workers Registration Board in a judicial review
Kwok Cheuk Kin v Secretary for Justice [2021] 3 HKLRD 591
Application of the Public Interest Litigation exception where there are multiple proceedings at the appellate level
Javid Kamran v Director of Immigration [2021] HKCFI 747
Representing Director of Immigration in judicial review on the meaning of “ordinarily resided”, and the effect of suspensions of deportation order.
Kwok Cheuk Kin v Secretary for Justice [2021] 3 HKLRD 140
Judicial review of the “Co-location Arrangement” of the high speed rail at the West Kowloon Station
Family Law
HMC v CWY [2024] 5 HKC 617
Applications for variation: (i) jurisdictional scope of the court under Cap 192 in relation to variation sought for agreement embodied in Consent Summons; and (ii) where variation is sought in respect of a court order, whether the Court, in considering change of circumstances, can take into account circumstances prior to the order sought to be varied.
Secretary for Justice (in his capacity as the Central Authority designated under the Child Abduction and Custody Ordinance, Cap. 512) v. C & Anor [2024] 5 HKLRD 658
Interpretation of factor of “grave risk of an intolerable situation” where a parent with child-caring duties may be unable to permanently reside in the country to which the child is to be returned to; and treatment of the child’s objection exception.
NF v R [2023] 5 HKLRD 58
A breakthrough for same-sex parents, obtained a declaration of “parent at common law” to a partner in a same-sex relationship
AA v BB [2021] 2 HKLRD 1225
Grant of guardianship and joint custody to same-sex couple
LWK v ZQJ [2018] HKFC 117
Anti-suit injunction and application of a forum challenge; impact of filing of a form indicating no intention to defend petition on the question of submission to forum.
Tax Law
Koo Ming Kown & Anor v The Commissioner of Inland Revenue [2021] 3 HKLRD 642
Appeal against decisions of the Inland Revenue Board of Review, successfully challenging a director’s liability to pay additional tax based on an incorrect tax return of the company.
