Gary Oliver
Senior Clerk
+44 (0) 207 822 7325
Tim has a wide-ranging practice that encompasses all Chambers' main areas of work, with a particular focus on public international law, public and regulatory matters, competition, and commercial law. He is based in Hong Kong where he has established a formidable reputation as a leading junior, with particular recognition for his public law work.
Tim commenced practice in England and Wales in March 2018 on completion of his six-month pupillage in Chambers, having been called to the Bar in 2017. Tim was admitted as a barrister in Hong Kong in 2009, where he is a member of Temple Chambers. He is ranked as an ‘up and coming’ junior in Chambers Global, which describes him as "one of the best public law juniors around". He is also listed as a 'Global Elite Thought Leader' by Who's Who Legal. He is highly ranked for his Administrative and Public Law, Competition Law, Commercial Dispute Resolution expertise in Legal 500's Hong Kong Bar rankings, as well as for Commercial Dispute Resolution and Administrative Law in Chambers & Partners Greater China Region.
Highlight cases
Public International Law:
Public & Regulatory:
Competition:
Commercial:
Tim accepts instructions in all areas of Chambers' public international law practice.
“A very bright and user friendly barrister, especially when it comes to competition and public law related matters.”
Legal 500, 2022
Acting for former Georgian Defence Minister David Kezerashvili before the ECtHR, which upheld his claim that his right to a fair trial under Article 6 of the European Convention was violated in the course of the criminal proceedings brought against him in Georgia. The judgment may be found here.
The Hong Kong Court of Appeal upheld a constitutional challenge to the policy of the Hong Kong Housing Authority which excludes same-sex couples from eligibility for subsidised public rental housing units as “ordinary families”.
The Applicant, an asylum seeker, had been held in immigration detention for over 3 years and 3 months at Castle Peak Bay Immigration Centre following a term of imprisonment for blackmail in 2018. The Court of Appeal found that the Applicant’s detention was in breach of the ‘Hardial Singh Principles’ because (i) it had gone on for a period of time that was unreasonable in all the circumstances, and (ii) his removal could not be effected within a reasonable time. Mr Singh’s detention had therefore become unlawful, and he was entitled to immediate release. The judgment contains a number of significant developments in the application of the ‘Hardial Singh Principles’. Tim appeared for Mr Singh, instructed by Mohnani & Associates. Please see the judgment here.
Application on behalf of the insurers for disclosure of UK assets belonging to the Syrian Government and certain officials in order to enforce a judgment in respect of a 1985 State-sponsored hijacking of an EgyptAir flight. Led by Tony Peto KC.
Judicial review proceedings brought to challenge the proposed Extradition Law which would allow extradition from Hong Kong to other parts of the PRC. Acted for the Applicant, led by Lord Pannick QC. Shortly before the hearing in Hong Kong, the Bill was withdrawn because of protests.
The Court of Appeal of the Cayman Islands (Goldring P, Field and Morrison JJA) allowed the Government’s appeal. Tim acted for the Deputy Registrar and Attorney General.
Advice re: an ongoing matter before the International Court of Justice (2017).
Advice re: an intended action before the International Court of Justice (2016).
Establishing circumstances in which mandated refugees enjoy right to work. With Michael Fordham QC.
Whether removal to a risk of inhuman or degrading treatment compatible with HKBOR Article 3. Led by Richard Gordon KC.
Junior Counsel for UNHCR. Establishing that the HKSAR, a non-party to the Refugee Convention, may not lawfully return or expel mandated refugees.
Legal Consultant to Mr. Stanišić.
Tim accepts instructions in all areas of Chambers' public law practice.
“Tim ticks all the boxes. He's very analytical and forceful with his advocacy. He turned judges who were against us to our side.”
Chambers and Partners, 2025
“He is a great communicator and has a strong grasp of the fundamentals and the nuances of public law.”
Chambers and Partners, 2025
“Tim operates way beyond his years. He's very commercial, which you don't find in a lot of barristers, and never loses the client-focused aspect of it.”
Chambers and Partners, 2025
“Strong knowledge of public law, able to see through the evidence and focus on key issues and top rate written advocacy.”
Legal 500, 2025
“Tim is an outstanding public law junior. He has the law at his fingertips and offers incisive analysis of the issues, coupled with first-rate communication skills and an assured manner in court.”
Legal 500, 2024
“He did a fantastic job and is an undoubted intellect.”
Legal 500, 2023
“He is a fantastic barrister - super-intelligent, very commercial and easy to work with. When you take into account Tim's seniority, I don't find anyone quite comparable at that level.”
Legal 500, 2023
“His knowledge and experience of the area are extensive and his advocacy skills both written and oral are absolutely top notch. A great team player and very user friendly.”
Legal 500, 2023
“An excellent advocate, with tremendous experience in both public and competition law. He commands the respect of all the judges he appears before.”
Legal 500 Hong Kong, 2022
“Tim is a star. A measured yet forceful advocate who has a very tactical mind. He easily holds his own with the most senior of judges.”
Legal 500 Hong Kong, 2022
“A very bright and user friendly barrister, especially when it comes to competition and public law related matters.”
Legal 500, 2022
“One of the go-to counsel.”
Chambers UK, 2019
“A bright star in the making for administrative law cases.”
Chambers Global, 2018
“One of the best public law juniors around.”
Chambers Global, 2018
The Hong Kong Court of Final Appeal handed down judgment in two major constitutional appeals concerning the exclusion of same-sex couples from access to public rental housing (PRH) units and the Home Ownership Scheme (HOS).
The Hong Kong Court of Appeal upheld a constitutional challenge to the policy of the Hong Kong Housing Authority which excludes same-sex couples from eligibility for subsidised public rental housing units as “ordinary families”.
Resisting a constitutional challenge to the Governor’s enactment of the Civil Partnership Act via reserved powers. Led by Tom Hickman KC.
Challenge to alleged police practice of informally ‘freezing’ bank accounts by ‘no consent’ letters. Led by Abraham Chan SC.
Application by former Defence Minister alleging Article 6 violations in Georgian criminal appellate proceedings. Led by Sir Jeffrey Jowell KC.
Represented the Cayman Islands Attorney General in judicial review proceedings concerning same-sex marriage. Led by Dinah Rose KC and Sir Jeffrey Jowell KC.
Habeas corpus following 3+ years of immigration detention. With Josh Baker.
Whether leave to appeal required following a refusal to extend time in judicial review. Led by Philip Dykes SC.
Judicial review proceedings brought to challenge the proposed Extradition Law which would allow extradition from Hong Kong to other parts of the PRC. Acted for the Applicant, led by Lord Pannick QC. Shortly before the hearing in Hong Kong, the Bill was withdrawn because of protests.
Appearing for Greater Bay Airlines (“GBA”) before the Air Transport Licencing Authority (“ATLA”) at the private inquiry hearing of GBA’s application for a licence to operate as a commercial airline. The licence was granted by ATLA and makes way for GBA to operate scheduled passenger and cargo flights on up to 104 specified routes at an unlimited frequency to and from Hong Kong International Airport.
The Court of Appeal discharged a Prohibition Order restraining the Respondent / ex-husband from leaving Hong Kong on the ground that the travel restriction disproportionately interfered with his freedom of movement under Article 31 of the Basic Law and his common law right to work. Tim acted pro bono for the successful Respondent.
The High Court of Hong Kong found that the existing mechanism for handling misconduct complaints against police officers was constitutionally deficient. The mechanism, which is managed by a department within the Hong Kong Police Force, lacked independence and impartiality and fell short of the requirements of Article 3 of the Hong Kong Bill of Rights (which prohibits cruel, inhuman or degrading treatment or punishment). The Court also found that the Commissioner had acted unlawfully by failing to prevent officers deploying on public order duties without clearly visible, unique identity markings. Tim Parker acted pro bono for the Hong Kong Journalists Association. Please see the judgment here.
The HK Court of Final Appeal held, in an important decision on judicial review procedures, that out-of-time judicial review applicants who are refused an extension of time at first instance may appeal to the Court of Appeal as of right. The Court overruled a line of earlier Court of Appeal authorities to the contrary. The Court further held that it had jurisdiction to hear appeals in such cases, and that the bar on bringing an appeal to the top Court against a decision refusing leave to appeal to the Court of Appeal did not apply, since the applicants had not needed leave in the first place.
Acted for GSISAL in their application for a declaration that the German language restrictions contained in its Articles of Association (“the Articles”) infringe the Race Discrimination Ordinance (Cap. 602) (“the RDO”).
The Court of Appeal of the Cayman Islands (Goldring P, Field and Morrison JJA) allowed the Government’s appeal. Tim acted for the Deputy Registrar and Attorney General.
Represented QT in a landmark discrimination case in the Hong Kong Court of Final Appeal (with Dinah Rose QC). The Court ruled that the Director of Immigration acted unlawfully by excluding a same-sex couple from his policy of granting dependant visas to the spouses of employment visa holders.
Challenge to the exclusion of same-sex couples from the Government’s policy of granting dependant visas. Led by Dinah Rose KC.
Appeal to the Privy Council from the Cook Islands concerning the status, interpretation and application of indigenous customary laws in former colonial territories. Concerned with succession rights of non-blood adoptees under Māori traditions and customs.
Securities regulation; human rights; transmission of compelled testimony to overseas regulator for use in criminal proceedings.
Right to fair trial; successful constitutional challenge to broadcasting sector competition law. (Appeal pending). With Dinah Rose QC.
Police abuse of democracy protester; judicial review against failure to disclose identity of police officer suspects.
Freedom of choice of occupation; Barrister challenging constitutionality of the Bar Code of Conduct prohibition on subsidiary occupations.
Prosecution appeal against acquittal on war crimes charges. Legal Consultant to Mr. Stanišić, led by Wayne Jordash KC.
Human rights; fair hearing before an independent and impartial tribunal; successful constitutional challenge to prison disciplinary proceedings resulting in loss of days.
Establishing circumstances in which mandated refugees enjoy right to work. With Michael Fordham QC.
Whether Court of Final Appeal had jurisdiction to overturn its own judgment acquitting accused; successfully arguing Court should not exercise implied power.
Whether Court of Final Appeal had jurisdiction to overturn its own judgment acquitting accused; successfully arguing Court should not exercise implied power.
Junior Counsel for UNHCR. Establishing that the HKSAR, a non-party to the Refugee Convention, may not lawfully return or expel mandated refugees.
Whether removal to a risk of inhuman or degrading treatment compatible with HKBOR Article 3. Led by Richard Gordon KC.
Constitutional law; principle of legality; right to silence; compelled testimony.
Inland revenue judicial review re tax liability in excess of HK$ 330,000,000.
Tim accepts instructions in all areas of Chambers' competition law practice.
“Tim brings a rich experience in the competition sphere both in Hong Kong and from the United Kingdom.”
Legal 500, 2025
“Tim combines outstanding technical ability and legal knowledge in the area of competition law with his strong capabilities as an advocate. His written and oral submissions are first-rate.”
Legal 500, 2024
“Tim has outstanding analytical abilities and is a first rate advocate. Without question, he is one of the ablest lawyers in this field.”
Legal 500, 2023
“An excellent advocate, with tremendous experience in both public and competition law. He commands the respect of all the judges he appears before.”
Legal 500 Hong Kong, 2022
“An obvious choice for competition matters, Tim has been involved in a number of the pathbreaking cases under the new Hong Kong regime.”
Legal 500, 2021
“He brings to the table very strong analytical ability and valuable insights from his sterling public law practice.”
Legal 500, 2021
Challenge to the CMA’s decision to launch a market investigation into Apple and Google’s mobile ecosystems. Led by Tim Otty KC.
Acting for the Competition Commission in the first enforcement proceedings brought under the Second Conduct Rule, alleging abuse of market power in the supply of medical gases. Led by Robert O’Donoghue KC and Jin Pao SC.
Damages action brought under section 47A of the Competition Act 1998 alleging abuse of dominance and cartel conduct in the supply of traceability services for rare earth minerals. Led by Brian Kennelly KC.
Acting for Harbour Plaza 8 Degrees Hotel group (part of CK Asset Holdings Ltd) defending allegations of facilitating price fixing in respect of theme park and tour tickets. Led by Abraham Chan SC.
Appeal in a commercial dispute for the purchase price of fuel, defence alleging illegality due to price fixing (CA).
Defence of a listed IT distributor in the first enforcement action brought before the Competition Tribunal in respect of alleged bid-rigging / price fixing. Led by Gerard McCoy SC.
Right to fair trial; successful constitutional challenge to broadcasting sector competition law. (Appeal pending). With Dinah Rose QC.
Tim accepts instructions in all areas of Chambers' commercial law practice.
“Tim is very, very commercial - he never loses the client-focused aspect and he understands the issues our clients face.”
Chambers and Partners, 2025
“Tim Parker is a very good, sophisticated advocate. Very responsive and commercial.”
Chambers and Partners, 2025
“Having worked extensively with a lot of Hong Kong counsel, he really stands out, especially for his level of seniority.”
Chambers and Partners, 2025
“He is intellectually outstanding: he is a superb lawyer and tactically smart beyond his years. He produces beautifully drafted documents, and excellent legal research, and he’s an absolute delight to work with. A total star.”
Legal 500, 2025
“Tim is intellectually brilliant; his legal research and analysis is absolutely superb, the documents he produces are beautifully written and exceptionally well argued, and his tactical thinking is outstanding. He is the best of the best.”
Legal 500, 2024
“Overall, while his written work is excellent, his advocacy and performance in court are also very impressive, making him one of the best junior barristers in Hong Kong.”
Chambers & Partners, 2023
“Tim is extremely intellectual and practical and it is difficult to find another junior barrister of his calibre.”
Chambers & Partners, 2023
“He is a fantastic barrister - super intelligent, very commercial and easy to work with.”
Chambers & Partners, 2023
“Tim is one of the best advocates in court. He is very intelligent and can think of arguments that other advocates do no typically cover. His arguments are highly persuasive.”
Legal 500, 2023
“An intelligent and astute counsel of high integrity.”
Chambers and Partners Hong Kong, 2022
“Tim is superbly clever, and a highly talented and effective advocate who is always well prepared and inspires great confidence.”
Legal 500 Hong Kong, 2022
“Utterly brilliant.”
Legal 500, 2021
“Utterly brilliant: his drafting is elegant and concise, and he has an excellent sense of how to present an argument.”
Legal 500, 2021
9-figure USD dispute arising out of cryptocurrency derivatives trading activities. Led by Andrew Green KC.
Commercial dispute re breach of a global licensing agreement for electronics products.
Application for a further and more specific injunction arising out of an arbitration.
Application to set aside an examination order giving effect to a letter of request in US regulatory action. With Josh Baker.
Examination of a witness pursuant to a letter of request for use in a US action for breach of licence and/or patent.
Appearing for Greater Bay Airlines (“GBA”) before the Air Transport Licencing Authority (“ATLA”) at the private inquiry hearing of GBA’s application for a licence to operate as a commercial airline. The licence was granted by ATLA and makes way for GBA to operate scheduled passenger and cargo flights on up to 104 specified routes at an unlimited frequency to and from Hong Kong International Airport.
Commercial dispute over management of business aviation aircraft.
Setting aside injunctive relief given in aid of Singapore proceedings.
Ports machinery construction contracts; bank guarantees; loss of security.
Trademark / contractual dispute over the use of the ‘Merck’ name.
Application on behalf of the insurers for disclosure of UK assets belonging to the Syrian Government and certain officials in order to enforce a judgment in respect of a 1985 State-sponsored hijacking of an EgyptAir flight. Led by Tony Peto KC.
Bankers’ bonuses; successfully contending for implied anti-avoidance terms barring capricious denial of contractual bonuses.
VAT registration number: n/a
Barristers regulated by the Bar Standards Board
Gary Oliver
Senior Clerk
+44 (0) 207 822 7325
Derek Sutton
Deputy Senior Clerk
+44 (0) 207 822 7327
Adam Sloane
Deputy Senior Clerk
+44 (0) 207 822 7326
Dean Tolman
Clerk
+44 (0) 207 822 7331
Billy Brian
Clerk
+44 (0) 207 822 7339
Marc Armstrong
Clerk
+44 (0) 207 822 7330
Adam Fuschillo
Clerk
+44 (0) 207 822 7329
Danny Compton
Clerk
+44 (0) 207 822 7338
Sophie Reeve
Clerk
+44 (0) 207 822 7324
Toby Dennison
Clerk
+44 (0) 207 822 7328
Daniel Higgins
Clerk
+44 (0) 207 822 7322
Lilly-Grace Hilliard
Clerk
+44 (0)20 7822 7234