Harry Gillow

Call: 2017

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BA (Oxford), GDL (City University), BPTC (BPP)

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Harry joined Chambers as a tenant in 2018 following successful completion of pupillage. He has a busy and diverse practice spanning all areas of Chambers’ work, including competition, commercial, EU, VAT, procurement, administrative and public law. Harry is regularly instructed both as junior and sole counsel and has appeared in a range of tribunals, including the County Court, High Court, Court of Appeal, Information Tribunal and VAT Tribunal.

Prior to coming to the Bar, Harry graduated from Magdalen College, Oxford, with a double first in Classics and worked as a researcher in Parliament with a particular focus on EU issues.

  • News
  • Commercial

    Harry is regularly instructed both as sole counsel on commercial disputes and as part of a team. He is instructed as junior counsel, led by William Buck, in Quilter v Leonteq, a complex £20m+ multiparty Commercial Court (originally offshore in the Isle of Man) dispute concerning allegedly fraudulent sales of structured note investment products to a major insurance institution.

    More broadly, he has extensive county court advocacy experience, particularly defending airlines in claims under EC Regulation 261/2004, but also a range of other contractual and tortious disputes. He has considerable experience of conducting CMCs and strike out applications on behalf of clients.

  • Competition

    Harry has experience in a range of competition matters, both acting along and assisting more senior members of chambers, including instructions as a junior barrister in a response to a CMA cartel investigation led by Ben Rayment and advising a local authority on the competition implications of suspected employee fraud. In 2019, Harry completed a secondment at the Payment Systems Regulator assisting with the card-acquiring services market review.

    Harry also worked on a wide range of competition law matters during pupillage, including Emerald Supplies and others v British Airways plc (assisting Philip Moser QC and Ben Rayment) and Ping Europe Limited v Competition and Markets Authority (assisting Ben Lask). Harry also assisted with a range of confidential advisory matters, including in respect of object and effect infringements in the financial sector and the applicability of the illegality defence in competition law actions.

  • Public, EU and human rights

    Harry accepts instructions in relation to all aspects of EU law, and regularly advises private clients, NGOs and regulatory bodies on the interpretation of EU legislation. Recent instructions include advising on the possibility of an EU regulation for tackling human rights abuses in business supply chains and advising DEFRA on farming appeals.

    He has also been instructed on behalf of the government in a number of benefits and immigration related cases, including Secretary of State for the Home Department v Denis Viscu, led by Ben Lask, where the Court of Appeal decided that that the term “imprisonment” in the Immigration (EEA) Regulations 2016 includes custodial sentences passed on minors and young offenders.

    He is also instructed on an ongoing appeal to the UNHRC on the question of the compatibility of whole-life sentences with the International Covenant on Civil and Political Rights, led by Piers Gardner.

    In his first year of practice, Harry completed a secondment in the Bank of England’s EU Withdrawal Unit, where he gained extensive experience advising on Brexit-related issues in the financial sector.

  • Tax & duties

    Harry accepts instructions in VAT and customs matters, and has appeared for and against HMRC in the VAT Tribunal and county court. Current and recent instructions include:

    • Magherafelt District Council v HMRC: a test case for Northern Ireland, led by Melanie Hall QC, in which the District Council claims that its supplies of sports, leisure and recreational services fall outside the scope of VAT on the basis that the making of those supplies does not comprise an economic activity;
    • Acting for an industry body in a case relating to whether services provided should be classified as insurance intermediary services, led by Valentina Sloane QC;
    • Assisting with advice on the signs and implications of missing trader fraud in a supply chain; and
    • Advising a sporting body on the VAT implications of a scheme to construct sporting facilities.

    During pupillage, Harry worked on a number of VAT and customs matters, including HMRC v Honeywell Analytics [2018] EWCA Civ 579 and advice gambling duty and on the interpretation of the Soft Drinks Industry Levy (assisting Valentina Sloane QC), as well as on cases involving the VAT classification of supplies related to further education (assisting Melanie Hall QC and Peter Mantle).


  • Public procurement

    Harry has gained extensive procurement litigation experience on both the claimant and defendant sides, and has acted in an advisory capacity to a number of government clients. His recent instructions include:

    • Acting for a central government department in a challenge to a procurement for a facilities maintenance contract, including in respect of a successful application to lift the automatic suspension (led by Sarah Hannaford QC and Ewan West);
    • Advising a central government department on whether a multi-million pound procurement exercise had been properly carried out;
    • Acting as sole counsel in a challenge to a procurement for window-cleaning services;
    • Acting for the Ministry of Defence in Marine Specialised Technology Ltd v Secretary of State for Defence, a claim for substantial loss alleging breach of the Defence and Security Public Contracts Regulations 2011.
  • Insolvency

    Harry has advocacy and advisory experience in insolvency matters. He has been instructed on a number of matters relating to winding up petitions, including applications to restrain, dismiss or rescind winding up petitions.

    Recent instructions include:

    • Successfully representing a company in an application to restrain and dismiss a winding up petition on the basis of a disputed debt;
    • Drafting submissions to establish a company as a creditor in an insolvency, led by William Buck.
  • Data protection & information

    Harry is regularly instructed by the Information Commissioner to draft responses in appeals under FOIA and EIR and represent the Commissioner in the Information Tribunal. Recent cases include Leeds Teaching Hospital NHS Trust v Information Commissioner, where he successfully defended the Commissioner’s decision against the Trust’s appeal.


  • Additional information


    • BPTC, BPP London
    • GDL, City University, London
    • BA Literae Humaniores, Magdalen College, Oxford (Double First)

    Scholarship and prizes

    • BPP Excellence Award
    • Inner Temple Exhibition
    • Magdalen College Demyship (Academic Scholarship)
    • Goddard Classics Scholarship

    Before coming to the bar, Harry worked as a researcher for an MP in Parliament. He was a finalist on University Challenge in 2015. He was a choral scholar at Oxford and still enjoys singing regularly with choirs and operatic groups in London. He serves as an Army Reservist with the Honourable Artillery Company, and was previously chair of Human Rights Watch’s Young Professionals Network.

  • Publications