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London: Dispute resolution

International arbitration
International arbitration - ranked: tier 6

Fietta LLP

Fietta LLP 'has a large case load and has talent from top to bottom'. The firm is widely respected for its experience in investor-state arbitration. Stephen Fietta QC, who took silk in 2019, has secured numerous substantial awards for his state and investor clients; Jiries Saadeh and Ashique Rahman were promoted to partner and counsel, respectively. Oonagh Sands and Laura Rees-Evans are the senior associates to note.

Practice head(s):Stephen Fietta; Jiries Saadeh

Other key lawyers:Ashique Rahman; Oonagh Sands; Laura Rees-Evans


'Stephen Fietta QC is very smart and contributes effectively to any team'.

'Jiries Saadeh is simply fantastic'.

'Counsel Ashique Rahman is excellent and the associates are all very good'.

Key Clients

PL Holdings

Mohamed Abdel Raouf Bahgat

Theodoros Adamakopoulos and others

Big Sky Energy

Arab Telemedia

Work highlights

  • Represented PL Holdings in treaty arbitration proceedings brought against the Republic of Poland related to the expropriation of a bank by Poland’s financial regulatory authority.

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Public international law
Public international law - ranked: tier 1

Fietta LLP

Arguably, 'one of the leading boutique practices in public international law', Fietta LLP has substantial expertise in investment treaty proceedings, maritime boundary disputes and human rights matters. The practice is regularly instructed by sovereign states, corporate, individual and NGO clients across a wide spectrum of public international law matters. Stephen Fietta QC has 'an outstanding reputation' in investment treaty arbitration and often leads on high-profile and substantial claims, including acting for a large group of Greek investors in an ICSID arbitration against the Republic of Cyprus arising from the Cypriot financial crisis and European Union/IMF bail-out of 2013. Also of note are recently promoted partner Jiries Saadeh, counsel Ashique Rahman and associates Oonagh Sands and Laura Rees-Evans.

Practice head(s):Stephen Fietta QC

Other key lawyers:Jiries Saadeh; Oonagh Sands; Ashique Rahman


'Fietta is now undoubtedly the leading boutique in London in international arbitration and public international law. They have a large case load, and talent from top to bottom. No other boutique in London comes close.'

'Stephen Fietta is one of the best experts on public international law and has a very good and experienced team behind him.'

'Jiries Saadeh is among the best three of his generation- definitely a name to note.'

'Ashique Rahman is an excellent counsel; Oonagh Sands and Laura Rees-Evans are also standout senior associates'.

Key Clients

Big Sky Energy Corporation

Arab Telemedia

City-State N.V. and others

Vincent Ryan / Schooner Capital LLC

Work highlights

  • Representing a Finnish national, in a pending UNCITRAL arbitration brought under a bilateral investment treaty against Egypt in relation to an iron ore and steel producing concession.
  • Representing Big Sky Energy Corporation (a US company previously listed on the NASDAQ) in its investment dispute with the Republic of Kazakhstan regarding the state’s allegedly unlawful expropriation of Big Sky’s investments in Kazakhstan.
  • Advising Arab Telemedia, a Jordan-based media company, in a treaty arbitration against Qatar under the Jordan-Qatar BIT.
  • Representing City-State N.V. and others in an ICSID arbitration against Ukraine brought under the Netherlands-Ukraine BIT in a dispute concerning Ukraine’s violations of the BIT with respect to an alleged failure to protect the claimants’ investment in a Ukrainian bank from illegal asset-stripping by a Ukrainian oligarch.
  • Advising an Asian State on various issues relating to territorial sovereignty and jurisdiction and the law of the sea.
Leading individuals

Stephen Fietta QC - Fietta LLP

Next Generation Partners

Jiries Saadeh - Fietta LLP

Rising stars

Ashique Rahman - Fietta LLP

Oonagh Sands - Fietta LLP

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Further information on Fietta LLP

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