John is a public law specialist with related expertise in public international law and information law. He is ranked as a leading junior in Chambers and Partners and Legal 500 and is described as “a very effective advocateˮ with “great client-handling skillsˮ and “real clarity of thought and an ability to cut through the difficulties in public lawˮ.

John acts for central government, local authorities, other public bodies and claimants. He was appointed to the Attorney Generalʼs A Panel of Counsel in September 2025, after three years on the B Panel and three years on the C Panel. John is also called to the bar of the Virgin Islands.

John acts in public law matters of every type and is regularly instructed in sensitive and high-profile litigation involving the UK Government. He has particular experience in matters involving national security or international relations issues and in applications for injunctive relief.

His recent cases include:

  • Ministry of Defence v Global Media and Others, the MOD super-injunction proceedings, arising from a large-scale data incident [2025] EWHC 1806 (Admin), [2024] EWCA Civ 838, [2024] EWHC 1220 (KB), [2024] EWHC 312 (KB), [2023] EWHC 2999 (KB).
  • R (TPL1) v Secretary of State for Defence [2025] EWHC 1729 (Admin), defending alleged failures to publish relevant information for the ‘Triples Review’ into the eligibility of former Aghan Special Forces for relocation to the UK under the ARAP scheme.
  • R (Pompe) v Secretary of State for Foreign Commonwealth and Development Affairs [2025] EWHC 1489 (Admin), resisting an application for an urgent, interim injunction to prevent the signing of a treaty between the UK and Mauritius regarding future sovereignty of the Chagos Islands.
  • R (Irwin) v Coventry City Council [2025] EWHC 1100 Admin, resisting an interim injunction and permission for judicial review over the felling of trees for a cycleway (with James Goudie KC)
  • R (KP) v Secretary of State for Foreign, Commonwealth and Development Affairs [2025] EWHC 370 (Admin), defending the refusal to admit to the UK an individual with complex mental health problems, serving a prison sentence in the British Indian Ocean Territory, following a claim for international protection. The latest case in the long-running BIOT Migrants Litigation, arising from the arrival of Sri Lankan migrants in the British Indian Ocean Territory (see also: BAA & Others v Commissioner for the British Indian Ocean Territory (Mr Paul Candler) & Others [2023] EWHC 767 (KB)).
  • R (YVR) v Birmingham City Council [2024] EWHC 701 (Admin), [2024] PTSR 866, acting for the Council in a challenge to the policy of charging the statutory maximum amount for the provision of adult social care, in circumstances of financial difficulty (with Joanne Clement KC).
  • EFG v The Security Service [2024] UKIPTrib 2, acting for the Respondent in an application for interim injunctive relief arising from alleged unfairness in a review of the Complainant’s security vetting (unled).
  • Dalston Projects Ltd v Secretary of State for Transport [2024] EWCA Civ 172, acting for the Claimants in an appeal arising from the first statutory review of a decision to detain a ship under the Russia (Sanctions) (EU Exit) Regulations 2019 (unled).

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  • Quotation symbolJohn is hugely intelligent, strategic and pragmatic. He works seamlessly with the solicitors and instils great confidence in clients. He is a calm and collected advocate.

    Quotation symbolChambers & Partners 2026
  • Quotation symbolJohn has real clarity of thought and an ability to cut through the difficulties in public law.

    Quotation symbolChambers and Partners 2025
  • Quotation symbolJohn is clear, concise and measured. He is a very effective advocate.

    Quotation symbolChambers and Partners 2025

Expertise

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John is instructed to advise and represent clients across a broad range of public law matters. His recent work has involved issues ranging from ECHR extra-territorial jurisdiction to retained EU law obligations, constitutional law, public interest immunity and adult social care.

“John is hugely intelligent, strategic and pragmatic. He works seamlessly with the solicitors and instils great confidence in clients. He is a calm and collected advocate.” CHAMBERS & PARTNERS 2026

Quotation symbol

  • John is a really impressive barrister with an extremely good legal mind.

    Chambers & Partners 2026
  • John is clever and intellectually strong, and he has great client-handling skills.

    Chambers and Partners 2024
  • An elegant and skillful advocate, who is easy to work with.

    Legal 500, 2024
  • John has an understated confidence which is very effective in the court room.

    Legal 500, 2025

Download Public CV

TogglePublic International

John is regularly instructed in matters that straddle domestic and public international law, including the law of UK Overseas Territories. In addition to the public law cases listed above, his instructions in this area have included:

  • Advising a client on banking regulation in an Overseas Territory.
  • Advising a client on the scope of provisions in the Diplomatic Privileges Act 1964 and the Vienna Convention.
  • Advising a client on the intersection between maritime law and international human rights law.
  • Advising a client on the use of force.
  • Advising a client on the extra-territorial effect of data protection law.
  • Representing a diplomat of a foreign state in proceedings before the English courts.
  • In addition, John has experience of investment treaty matters.

Download Public International CV

ToggleInformation, Technology & Media

John has a well-established practice in information law and is regularly instructed in related public law matters that involve freedom of information and the handling of datasets. In addition to the public law cases listed above, his instructions in this area have included:

  • Responding to Freedom of Information Act 2000 challenges, for the Information Commissionerʼs Office and others in the First-tier Tribunal.
  • Advising a client on freedom of information and market abuse issues in connection with the authorisation and licensing of COVID19 vaccines in the UK.
  • Advising a client on the extra-territorial effect of UK data protection law, following Brexit.

Download Information, Technology & Media CV

ToggleInquests & Inquiries

John is familiar with both statutory and non-statutory inquiries and is able to make effective use of his experience working with a range of public authorities when called upon to assist with an inquiry.

In recent years he has advised or represented core participants in the following:

The Dawn Sturgess Inquiry, into the death of Dawn Sturgess, who died in Salisbury of nerve agent poisoning in July 2018.

The Independent Inquiry into the issues raised by the David Fuller case.

The Jalal Uddin Inquiry, into the death of Jalal Uddin, who was murdered in Rochdale in February 2016.

The Independent Inquiry into Afghanistan, regarding allegations of unlawful killing by UK Special Forces 2010-2013

Download Inquests & Inquiries CV

ToggleCommercial Litigation

Before joining 11KBW, John practised from another leading commercial set. He is very familiar with commercial disputes work, in both courts and arbitration.

Download Commercial Litigation CV

Achievements

ToggleEducation

BPP University Law School: Bar Professional Training Course, Very Competent 2014 BPP University Law School: Graduate Diploma in Law, Distinction (2013)

University of Cambridge, Peterhouse: PhD in History (2006)

Kingʼs College London: MA in War Studies, Distinction (2003)

University of Cambridge, Pembroke College: BA Hons in History, First Class (2002)

ToggleAwards

Queen Mother Scholarship for BPTC, Middle Temple (2013)

Excellence Award for BPTC, BPP (2013)

Domestic Research Scholarship, University of Cambridge (2003)

Foundress Scholarship, Pembroke College, Cambridge (2002)

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  • Quotation symbol

    John is a really impressive barrister with an extremely good legal mind.

    Chambers & Partners 2026
  • Quotation symbol

    John is hugely intelligent, strategic and pragmatic. He works seamlessly with the solicitors and instils great confidence in clients. He is a calm and collected advocate.

    Chambers & Partners 2026
  • Quotation symbol

    John is a superb barrister. His written work is extremely precise and focused. He is great with clients - he explains his thinking clearly and understands entirely the context in which decisions are taken by public authorities and the different pressures they are under. His oral advocacy is also masterful - a calm yet powerful delivery.

    Legal 500 (2026)
  • Quotation symbol

    John has real clarity of thought and an ability to cut through the difficulties in public law.

    Chambers and Partners 2025
  • Quotation symbol

    John is clear, concise and measured. He is a very effective advocate.

    Chambers and Partners 2025
  • Quotation symbol

    John is a very good advocate.

    Chambers & Partners (2025)
  • Quotation symbol

    John has an understated confidence which is very effective in the court room.

    Legal 500, 2025
  • Quotation symbol

    John is clever and intellectually strong, and he has great client-handling skills.

    Chambers and Partners 2024
  • Quotation symbol

    John is extremely capable. He cuts to core issues in all of the drafting.

    Chambers and Partners 2024
  • Quotation symbol

    John has great legal skills, and provides good drafting and legal analysis.

    Chambers and Partners 2024
  • Quotation symbol

    An elegant and skillful advocate, who is easy to work with.

    Legal 500, 2024