Diana Tarnavskaia

Diana Tarnavskaia

Associate
London, United Kingdom
phonemail

About

As an Associate in the Dispute Resolution team with over 8 years' experience in disputes, I advise on a broad range of complex commercial and civil disputes, with particular experience in cross-border litigation and international arbitration.

My practice covers a variety of claim types, including civil fraud, contractual disputes and debt recovery. I have experience advising multinational companies, high-net-worth individuals, insurance companies and senior company directors across domestic and multijurisdictional matters.

I have been involved in substantial litigation and arbitration proceedings, including advising on litigation strategy and enforcement, and managing complex disclosure exercises, drafting pleadings and applications. I have experience of High Court and ICC arbitration proceedings and have supported matters involving cross-border issues of jurisdiction and enforcement across multiple legal systems.

I am an active member of LS' Sports Team and LS' Independent Football Regulator initiative, and spoke on the topic during the LIDW 2026.

I also am actively involved in the Central Asian communities, including the British-Kazakh Society and the British Kazakh Law Association. Most recently, I contributed to the Commentary on the AIFC Court Rules (2025) and spoke at the Uzbek Arbitration Days (2026).

I speak Russian (native), French (fluent) and have a basic knowledge of Ukrainian and Latvian.

Experience

Recent cases include:

  • Acting for multiple defendants in a significant civil fraud claim involving over 50 parties, brought by the liquidators of various funds against their former investment managers, investment advisers, directors and other parties. The claim concerns investments in structured products, property, and art, due to be heard in a 12 week trial in the Commercial Court in 2027
  • Acted for a Chinese state-owned enterprise in two claims concerning breach of an EPC contract and a claim under a personal guarantee

Historically:

  • Represented an Eastern European state-owned respondent in a multi-jurisdictional ICC arbitration brought by an Italian contractor under FIDIC, with issues spanning Italian, French and Ukrainian legal systems
  • Acted for a HNWI in a civil fraud claim, involving multiple freezing injunctions and information applications, culminating in a successful judgment and subsequent contempt proceedings against the defendant