Stephanie Stocker

Partner, London



Stephanie Stocker is a partner in the Dispute Resolution group in London, whose practice focuses on complex multi-jurisdictional disputes, often in the oil & gas sector.

Stephanie has a breadth of experience before both the English courts and arbitral tribunals acting under the LCIA, ICC and ICSID Rules and in ad-hoc arbitration under the UNCITRAL Rules. 

Stephanie has advised clients operating in the extractives industry on a range of issues and disputes including providing advice on litigation strategy to financial institutions involved in the liquidation of an operating company holding interests in a Nigerian oil field, acting for States in investment treaty disputes relating to mining assets, and acting for shareholders in disputes relating to oil & gas joint ventures.

Stephanie also has substantial experience of advising on the enforcement of arbitration awards, including representing the Russian Federation in its resistance of the +US$50 billion Yukos arbitration award. 

In 2018 Stephanie was noted in the Legal500 as "an excellent lawyer, who is both very technically gifted and extremely hard-working".

Bars and Courts
England and Wales
Legal Practice Course
College of Law, London
Graduate Diploma in Law
Nottingham Law School
Cambridge University
Murray Edwards College


Bilateral investment treaty claim under the UNCITRAL Rules 1976
Acting for the Russian Federation to defend a US$12 billion claim brought against it on the basis of the alleged expropriation of, inter alia, mining, shipping, and construction assets.  

LCIA arbitration relating to the failure of an oil and gas project in Kazakhstan
Acting for the claimant in a claim against a third party for loss of profits which would have been derived from a successful oil and gas exploration project.  

Resisting the enforcement of the +US$50 billion Yukos award
Acting for the Russian Federation, resisting the enforcement of the +US$50 billion Yukos arbitration award.

Advising on potential claims involving a large oil and gas entity
Acting to advise the client of their potential claims arising from a dispute as the interpretation of commission provisions.

Representing a security trustee in its capacity as bridge note agent and bridge note security trustee
Acting for a leading security trustee and noteholders on litigation strategy in relation to several sets of ongoing and potential proceedings in Nigeria, France and England arising in connection with the collapse of the Afren group of companies and its operations in a Nigerian oil field.

English High Court litigation relating to a joint-venture dispute
Representing a high net worth individual in the successful discharge of an English High Court freezing injunction and connected litigation concerning the division of alleged joint-venture assets. 

Representing a shareholder in an Ukrainian telecoms company
Representing one of Ukraine’s biggest telecoms companies in its defence of a breach of contract claim arising from a sale and purchase agreement (LCIA arbitration), related tortious claims for conspiracy and unjust enrichment and related injunction proceedings (including a freezing order), in England, Cyprus, the Netherlands and Ukraine. 

Representing a shareholder in a Turkish mobile phone operator
Representing the owner of a controlling stake in Türkiye's leading mobile phone operator in proceedings before the Eastern Caribbean Supreme Court (High Court and Court of Appeal), and LCIA arbitration proceedings, concerning the disputed ownership of a US$1.5 billion stake in the operator.

Set-aside of an investment treaty award
Acting on an application to partially set aside an investment treaty award made in favour of our client but which our client considered was seriously flawed in its assessment of damages. 

English high court litigation relating to the enforcement of an ICC arbitration award
Representing an investor in relation to the enforcement of an ICSID arbitration award made in the context of a bilateral investment treaty, and involving issues of European law determined or to be determined by the European Commission and the General Court of the European Union.