Fietta LLP

Firm Profile

Rankings

UK

Leading firm in UK 2026

Chambers and Partners

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Chambers and Partners

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Overview

Provided by Fietta LLP

Fietta LLP is one of the world’s leading public international law and international investment disputes practices. We provide our clients with specialist legal representation, effective advocacy and unwavering commitment with respect to some of the world’s most sensitive and high-profile disputes. We have one of the world’s largest specialist public international law teams, which is top-ranked in the leading legal directories.

Work & experience

Provided by Fietta LLP

Fietta LLP is renowned for its expertise and experience advising States, international organisations, multinational corporations and private clients across all international law matters. The firm also has a busy advisory practice, advising State (and other) clients on some of the most sensitive and important territorial, maritime and other PIL issues of the day. We are engaged on multiple ICJ proceedings, State-to-State arbitration proceedings and investor-State proceedings.

Notable work

Provided by Fietta LLP

Public International Law Advisory

Fietta advises sovereign and other clients on a broad range of public international law matters.

State-to-State Disputes

Fietta acts in State-to-State disputes before international courts and tribunals, in mediations and in negotiations.

International Investment Law Practice

Fietta advises on the full life-cycle of foreign investments and acts for both investor and State parties to disputes.

Ranked Offices

Provided by Fietta LLP

Address (A-Z)

UK - Head office

Greater London

1 Fitzroy Square , London, Greater London, UK, W1T 5HF, London

www.fiettalaw.com

+44 (0)20 3889 9800

Chambers Laurel

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Fietta LLP

Top figures

9

Lawyers

3

Partners

2015

Established in

Key people

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