LAWYER PROFILE
Ioannis Alexopoulos

Ioannis Alexopoulos

UK 2026

Chambers ranking badge
Chambers ranking badge

Ranked in 2 practice areas

International Arbitration

UK-wide

6 years ranked

About

Provided by Signature Litigation LLP

UK

Practice Areas

Ioannis has extensive experience representing clients in high-value and complex matters, whether pursuant to institutional rules or in ad hoc proceedings. He specialises in commercial litigation and international arbitration, including banking disputes, particularly those involving financial products, investment banking and derivatives. He also focusses on commercial and business disputes with an emphasis on joint venture and shareholder disputes, shareholder protection, business break-ups, fraud.

His key industry sectors are financial services, energy/oil and gas, shipping/international trade, telecoms, IT and infrastructure projects. Ioannis’ main geographies are Greece, the Balkans, Russia, the Middle East, Brazil and sub-Saharan Africa. He also has considerable experience of regulatory and internal investigations.

Ioannis has extensive expertise representing clients in arbitrations under the ICC and LCIA rules, as well as others including SCC and UNCITRAL, and his cases often involve an international element, usually with competing multiple jurisdictions and laws. His clients include banks or their clients, insurers, intermediaries, venture capitalists and equity investors, and large corporates in England and internationally. Ioannis also advises in connection with investor state disputes.

Career

Associate, Holman Fenwick Willan, 1990; Partner, DLA Piper, 1998; Partner, Bryan Cave, 2015; Partner, Signature Litigation, 2016.

Professional Memberships

London Solicitors Litigation Association; International Bar Association; Lex Anglo-Brasil; ComitĂȘ Brasileiro de Arbitragem (CBAr).

Languages Spoken

Ioannis is fluent in both English and Greek, as well as conversational Portuguese.

Chambers Review

Provided by Chambers

Chambers Guide to the Legal Profession

Fraud: Civil - UK-wide

Band 4
Band 4

Individual Editorial

Ioannis Alexopoulos displays a breadth of experience representing claimants and defendants in civil fraud matters, with particular expertise advising on joint venture and shareholder disputes and business break-ups.

International Arbitration - UK-wide

Band 5
Band 5

Individual Editorial

Ioannis Alexopoulos brings longstanding experience in high-value commercial disputes seated across various jurisdictions. He is also adept at handling BIT claims.

Strengths

Provided by Chambers

  • Iannis is my go-to. He makes everything work. He puts the right team together and gets good results.

    Fraud: CivilChambers Guide to the Legal Profession
  • Ionnis is a highly experienced lawyer. He is very good at analysing a problem, distilling it and understanding the underlying commerciality. He is very competent and a safe pair of hands.

    Fraud: CivilChambers Guide to the Legal Profession
  • Ioannis is a seasoned litigator. Clients love him for his pragmatic and measured approach.

    Fraud: CivilChambers Guide to the Legal Profession
  • Ioannis has a broad experience and immediately gets to the real point.

    International ArbitrationChambers Guide to the Legal Profession
  • Ioannis is very good at analysing a problem and distilling it to understand the underlying commerciality.

    International ArbitrationChambers Guide to the Legal Profession
  • Ioannis is an efficient lawyer and a pleasure to work with.

    International ArbitrationChambers Guide to the Legal Profession

Ranked Individuals at Signature Litigation LLP (11)

London (Firms)

UK-wide

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