Department profile
Matrix Chambers

European Law

UK Bar Guide 2026 : London (Bar)

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Matrix Chambers

Rankings

Chambers Review

Provided by Chambers

European Law - London (Bar)

Band 2

What the Team is Known For

Matrix Chambers is home to a number of accomplished regulatory and public law specialists who are highly knowledgeable about EU law and institutions. The barristers are praised for having "the ability to address the complexity of difficult European legislation and see the wood for the trees". Members often act in areas such as free movement, the regulation of industry sectors, and state aid in the context of franchising or procurement, including related Francovich claims. Members have also represented clients from other member states in litigation involving various EU agencies. Recent highlights include successfully representing HMRC before the Supreme Court in a claim for damages under EU law.

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Strengths

Provided by Chambers

  • Matrix Chambers has very good clerking, they're very responsive, adaptable and always on hand to help.

    European Law respondentUK Bar

  • The clerks are always very helpful and user-friendly, I enjoy working with them.

    European Law respondentUK Bar

Notable Practitioners

Provided by Chambers

  • Aidan O'Neill KC
    Aidan O'Neill KC

    Aidan O'Neill KC

    Dual-qualified in Scotland and England, Aidan O'Neill KC possesses experience in important cases on Brexit, employment rights, free movement for EU citizens and the prohibition on trade restrictions between EU member states.

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  • Jessica Simor
    Jessica Simor

    Jessica Simor

    Jessica Simor KC is well known for her contributions to the legal debate regarding Brexit, having played a role in key UK constitutional law cases. Often acting for HMRC, she has earned further praise for her experience in cases concerning the UK's application of EU taxation or data protection regulations.

    • She is able to convey the necessary detail eloquently, persuasively and without overloading the client or judge. She is also an excellent assessor of strategy and remains pragmatic throughout.

      European Law respondentUK Bar

    • Jessica is really impressive and phenomenal. She is a brilliant advocate, who really fights passionately for her clients. She has the ear of the court, you can tell she has them on her side.

      European Law respondentUK Bar
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  • Takis Tridimas
    Takis Tridimas

    Takis Tridimas

    Takis Tridimas receives praise both for his academic contributions to the EU law field and for his handling of high-profile litigation. Tridimas is active in claims that examine EU institutions' liability to creditors of failed European banks. He also advises on civil and human rights cases that rely on EU law or the ECHR, including freedom of movement cases.

    • Takis writes the book on general principles of EU law, he's a serious player.

      European Law respondentUK Bar

    • He is an excellent lawyer with a deep understanding of EU law, extremely capable and well mannered, and an overall pleasure to work with.

      European Law respondentUK Bar
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  • Eleni Mitrophanous
    Eleni Mitrophanous

    Eleni Mitrophanous

    Eleni Mitrophanous KC boasts particular expertise in EU taxation law, in which she acts for individuals and commercial organisations as well as public authorities.

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  • Nicholas Gibson
    Nicholas Gibson

    Nicholas Gibson

    A member of the Bar of England and Wales and the Bar of Ireland, Nicholas Gibson has a well-established EU law practice, with a particular focus on competition law and sectoral regulation. He is often instructed by clients in the public and private sectors on matters pertaining to state aid, public procurement, indirect taxation and consumer protection.

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Ranked Barristers at Matrix Chambers (5)

London (Bar)

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