Kate practises across all of Chambers’ main areas, with a particular focus on commercial litigation, group actions, and environmental disputes.
Kate’s recent instructions include:
- Appearing in the Supreme Court and Court of Appeal in an appeal against a planning decision, the leading authority on the influence of settled practice in statutory interpretation (led by Patrick Green KC).
- Acting for the Defendants in an environmental group action (led by Adam Heppinstall KC and Freya Foster).
- Acting for the Claimants in the Pan NOx emissions litigation (one of The Lawyer’s Top 20 Cases for 2025).
- Acting for the petitioner in an unfair prejudice petition (led by Henry Warwick KC).
Kate regularly appears in the County Court and has significant experience as sole counsel in the High Court, including successfully appearing unled in a heavy application in the Chancery Division.
Kate was awarded the Lord Denning and Lord Brougham scholarships for her legal studies, prior to which she ranked second in her year as an undergraduate at Oxford and interned at UNHCR, the UN Refugee Agency.
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Expertise
Commercial
Kate has significant experience of commercial litigation and has a particular interest in disputes related to energy, commodities, and sports.
Examples of Kate’s recent work include:
- Acting for the claimant in relation to a $2.6 million debt arising from the financing of a South African gold mine (Alphier Capital LLP v Blyvoor Gold Capital (Pty) Ltd), led by Arnold Ayoo. Kate has appeared as sole counsel on multiple occasions, including at a heavy application hearing where she successfully defeated the defendant’s strike out application;
- Instructions to assist Patrick Green KC in Infrastructure Services v The Kingdom of Spain, concerning the recognition and enforcement of a €120 million arbitration award (one of the Lawyer’s Top 10 Appeals of 2024);
- Acting in proposed proceedings for an unfair prejudice petition, led by Henry Warwick KC;
- Acting in intended proceedings for breach of contract, unjust enrichment, unlawful means conspiracy, and breach of fiduciary duty in relation to interlinking oil & gas development agreements, worth c.$90 million, led by Arnold Ayoo and William Moody;
- Varied cases on behalf of banks and utility companies, including success at trial;
- Varied cases involving fraud, including APP fraud;
- Assisting with the permission to appeal application in Your Lawyers v Therium, one of The Lawyer’s Top 10 Appeals of 2025 (as a pupil, for Thomas Samuels); and
- Varied research and drafting on two claims under s90A of FSMA 2000 (including one of The Lawyer’s Top 20 Cases of 2024) (as a pupil).
Representative cases
grid list-
Alphier Capital LLP v Blyvoor Gold Capital (Pty) Ltd [2024] EWHC 2649 (ChD)
Company, Insolvency, and Bankruptcy
Kate has varied experience of company, insolvency, and bankruptcy law.
Examples of her recent work include:
- Re D.W.B. Waste Management Ltd[2025] EWHC 476 (Ch): Kate appeared pro bono at trial and successfully obtained an 11th hour adjournment on behalf of the Respondent director. Kate continues to advise in the proceedings (valued at over £500,000) which are brought for breach of fiduciary duty and for transactions at undervalue in relation to alleged under-declaration of VAT, unlawful payments and unlawful cash withdrawal;
- Acting in proposed proceedings for an unfair prejudice petition on behalf of the petitioner, a major shareholder of leading F1 engineering and technology company, led by Henry Warwick KC;
- Attending on and drafting winding up and bankruptcy petitions, including successfully resisting a bankruptcy order in the amount of £1.2 million; and
- Drafting written submissions on behalf of a Respondent for proceedings before the Takeover Panel Hearings Committee (as a pupil).
Representative cases
grid list-
Re D.W.B. Waste Management Ltd [2025] EWHC 476 (Ch)
Group Actions and Competition
Kate is currently instructed in:
- The Pan NOx emissions litigation on behalf of the Claimants (one of The Lawyer’s Top 20 Cases for 2025); and
- An environmental group action on behalf of the Defendant (led by Adam Heppinstall KC and Freya Foster).
In 2025, Kate undertook a three-month secondment as a Pegasus Scholar to the Sydney offices of Johnson Winter Slattery, a leading Australian law firm, where she worked on a range of class actions, including advising litigation funders.
In 2024, Kate undertook a five-month part-time secondment to the Competition and Markets Authority, where she gained unique insight into all aspects of competition litigation. Her work covered the CMA’s involvement in:
- Director disqualification in competition cases;
- Remedy negotiations pursuant to a Chapter II breach;
- Possible interventions in High Court proceedings; and
- Varied consumer matters.
As a pupil, Kate gained experience in various other group actions, including an environmental nuisance claim, the PPI group action, and a proposed group action arising from a terrorist attack.
She is also experienced with claims under s.90A of FSMA 2000.
Public and Environmental Law
Kate has a varied public law practice. Her recent work includes:
- Acting for the claimant/appellant in an appeal against a planning decision in the Supreme Court and Court of Appeal (led by Patrick Green KC) (Wathen-Fayed v Secretary of State for Levelling Up, Housing and Communities [2025] UKSC 32; [2024] EWCA Civ 507), and acting in related judicial review and statutory review proceedings. The Supreme Court judgment is the leading authority on the influence of settled practice in statutory interpretation;
- Acting for the Union of Medical Associate Professionals in judicial review proceedings relating to the Leng Review (led by Patrick Green KC);
- Acting for a private client in judicial review proceedings(led by Patrick Green KC);
- Acting for the Ministry of Housing, Communities, and Local Government in the UK Covid-19 Inquiry; and
- Research on multiple matters before the Investigatory Powers Tribunal (as a pupil).
Kate has a particular interest in environmental law, having studied Geography at university. She is currently instructed in an environmental group action as well as the Pan NOx emissions litigation.
Representative cases
grid list-
Wathen-Fayed v Secretary of State for Levelling Up, Housing and Communities [2025] UKSC 32
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Wathen-Fayed v Secretary of State for Levelling Up, Housing and Communities [2024] EWCA Civ 507
Professional Negligence and Insurance
Kate completed pupillage at a leading commercial set, where she gained specialist knowledge in professional negligence and insurance.
Kate has worked on professional negligence disputes across the legal, insurance, construction, and financial services industries. Kate’s recent practice in this area includes contributing to Butterworths’ Civil Precedents on Professional Negligence.
Kate’s experience of insurance disputes includes advice on coverage, notification, and aggregation, as well as brokers’ negligence and advising on potential unregulated insurance policies.
Sports
Kate has a particular interest in sports disputes, whether commercial or regulatory. She is a keen sportswoman who played Lacrosse for Wales at junior level and was awarded a Full Blue at Oxford University.
Examples of her recent work include:
- Acting for a high-profile sports club in urgent injunction proceedings brought against its regulator (whilst on secondment at Johnson Winter Slattery, Sydney, Australia);
- Acting for the major shareholder of leading F1 engineering and technology company in an unfair prejudice petition (led by Henry Warwick KC);
- Advising a major sporting governing body on their regulatory framework (led by Adam Heppinstall KC);
- Advice (as a pupil) in relation to a commercial dispute between a La Liga football club, major international player, and a football agent, involving allegations of breach of fiduciary duty;
- Drafting pleadings (as a pupil) in a dispute between two major sportswear brands; and
- Winning the Littleton Chambers Sports Law Essay Prize 2023.
Banking, Finance and Consumer
Kate regularly appears in court in consumer and consumer finance disputes, including:
- PPI, solar panel, and motor finance commission claims;
- Acting for energy companies in consumer disputes; and
- Acting for banks in mortgage related proceedings.
News and articles
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Instructing Kate Gardiner
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Government Legal Department, Junior Junior scheme (2024 to 16/03/2028)
- COMBAR
- ChBA
- Environmental Law Foundation (pro bono member)
Education
- BVS, City University – Distinction
- GDL, City University – Distinction
- BA (Hons) Geography, University of Oxford (Hertford College) – First Class (2nd in year)
Scholarships and Prizes
- Pegasus Trust Scholarship 2025, Inns of Court
- 1st Place – Littleton Chambers Sports Law Essay Prize 2023
- City Law School Scholarship for Academic Excellence
- Lord Denning Scholarship, Lincoln’s Inn
- Lord Brougham Scholarship, Lincoln’s Inn
- Gibbs Prize (proxime accessit) for Geography, University of Oxford
- Highly commended in the Royal Geographical Society DARG Dissertation Prize (top three dissertations in country)
- Hertford College Final Honour School Prize
- Hertford College Academic Scholarship
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For more information about the way barristers at Henderson Chambers work, including our fee transparency statement and our complaints process, please click here.
Bar Council Number: 76511
VAT Registration Number: 463400027
Legal Status: Barrister
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Regulated by the Bar Standards Board.
