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Fietta LLP

Public International Law

UK Guide 2026 : UK-wide

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Fietta LLP

Rankings

About

Provided by Fietta LLP

Fietta has a leading practice globally in public international law. Unlike most of its competitors, all of the firm’s lawyers are public international law specialists. The firm routinely advises sovereign clients on high profile and/or sensitive public international law questions. Fietta have recently advised clients on issues of, inter alia, State responsibility, Statehood and territorial sovereignty, sovereign immunity, treaty interpretation, law of the sea, international environmental law, foreign investment law, international human rights, international humanitarian law, State succession, international refugee law, as well as UN law and procedure.

Chambers Review

Provided by Chambers

Public International Law - UK-wide

Band 1

What the Team is Known For

Fietta is a boutique firm specialising in investment arbitrations and PIL. It has expertise in advising on both sides of sophisticated investor-state disputes, especially those governed by investment treaties. The firm frequently handles matters concerning energy and natural resources, as well as those involving financial institutions. It offers considerable expertise in matters regarding state succession and sovereignty, the Law of the Sea and boundary delimitations.

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Work Highlights

Provided by Chambers

  • Fietta represented the Republic of Azerbaijan in its two separate ICJ proceedings against the Republic of Armenia under the International Convention on the Elimination of All Forms of Racial Discrimination (CERD).

Strengths

Provided by Chambers

  • The firm has continuously demonstrated exceptional legal expertise as well as professionalism and innovative thinking.

    Public International Law respondentUK

  • A small boutique firm with capacity and legal expertise comparable to the big players.

    Public International Law respondentUK

  • Fietta has vision and great understanding of the context and client's view.

    Public International Law respondentUK

Notable Practitioners

Provided by Chambers

  • Stephen Fietta
    Stephen Fietta

    Stephen Fietta

    Stephen Fietta KC enjoys a sterling reputation for his expertise in PIL. He is regularly instructed on complex mandates concerning issues such as boundary delimitation and state sovereignty, and is praised for his specialist knowledge of the Law of the Sea. He also has a strong investor-state practice, handling a range of BIT claims.

    • His in-depth understanding of complex legal issues, combined with his strategic approach, allows him to deliver outstanding legal advice.

      Public International Law respondentUK

    • Stephen Fietta is one of the best and knows how to get people working together perfectly.

      Public International Law respondentUK
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  • Laura Rees-Evans
    Laura Rees-Evans

    Laura Rees-Evans

    Laura Rees-Evans's practice focuses on advising states and companies on a wide range of PIL issues. She is highly adept at handling international investment treaty arbitrations. She also brings previous experience at the UK's Foreign & Commonwealth Office to bear, particularly when advising on PIL issues arising out of Brexit.

    • She is dedicated, committed and an outstanding drafter.

      Public International Law respondentUK

    • She is able to get into the details of the case and has excellent client management.

      Public International Law respondentUK
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Ranked Individuals at Fietta LLP (2)

UK-wide

Members

Provided by Fietta LLP

Fietta LLP has rankings in the following guides

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