Contact details

Adam Polonsky

T: +44 20 7809 2780 M:+44 7730 751 720 Email Adam | vCard Office: London

Adam Polonsky Managing associate

Contact details

Adam Polonsky

Adam Polonsky
Managing associate

T: +44 20 7809 2780 M: +44 7730 751 720 Email Adam | vCard Office: London

Adam is a managing associate and solicitor-advocate in the commercial litigation department with extensive experience across a broad range of commercial and corporate disputes.
  • Profile
  • Services

Adam has acted on a wide range of complex commercial disputes, often in the Commercial Court, with a particular focus on cross-border disputes, director and shareholder disputes and international arbitration.

Confident assisting clients through all stages of litigation, Adam also has in depth experience of interlocutory hearings, representing his clients in relation to interim injunctions, freezing orders, third party debt orders, disclosure orders and applications for security for costs. 

  • Commercial litigation
  • Dispute resolution

Shareholder disputes

Acted for a prominent Ukrainian oligarch in complex multi-party proceedings in the Commercial Court in relation to a number of very substantial claims and counterclaims following the termination of business dealings between three former business partners.

Successfully settled a long-running dispute between deadlocked shareholders in a telecoms business.

Unfair prejudice

Acting for the petitioner in a s994 petition (unfair prejudice) against a director and shareholder in a major global luxury and fashion company. The claim involves breaches of contract and fiduciary duty.

Freezing relief

Acted for a foreign investment bank in proceedings in the High Court challenging the registration of a worldwide freezing order made in the Cypriot Court.

Various Claimants v Visa Europe Ltd and others; Various Claimants v MasterCard Inc and others

Acting for over 1,000 claimants in 14 separate claims against Visa and MasterCard for the recovery of interchange fees that were imposed on the claimants by the card schemes in contravention of European and UK competition law. The claims are valued at over £500 million.

More: Commercial litigation

International arbitration

Acted for a Dutch provider of management services in high value LCIA proceedings against a Central European State (and state-owned company) arising out of the privatisation of a steel manufacturing plant.

Professional negligence and breach of fiduciary duty

Acted for the joint liquidators of a development company against its former joint administrators for breach of duty in relation to the conduct of the administration.

Injunctive relief

Successfully applied for injunctive relief on behalf of the leading provider of official controls to the FSA in a dispute with its former managing director.

Investor disputes

Acted successfully for a European commodities trader in a dispute with a trading platform regarding the early closing of its hedging positions.

More: Dispute resolution

Latest news & insights

22 Feb 2024

From News

Stephenson Harwood secures High Court victory

Law firm Stephenson Harwood LLP has successfully represented Saxon Woods Investments Limited ("Saxon Woods") in proceedings before the High Court.


11 Jul 2023

From Insights

Knowing when you've novated: Musst Holdings v Astra Asset Management

In Musst Holdings Ltd v Astra Asset Management UK Ltd [2023] EWCA Civ 128, the Court of Appeal provided helpful guidance on when a contract will be deemed to have been..


02 Dec 2022

From Insights

What should an ISDA notice of default include? Macquarie Bank v Phelan

You enter into a foreign exchange swap under an ISDA Master Agreement with a party who later fails to pay amounts when due.


06 Oct 2021

From Insights

Unfair prejudice and the entitlement to buy-out: Macom v Bozeat

In Macom v Bozeat the Court made a finding of unfair prejudice. However, instead of the usual order to purchase the petitioner's shares, the Court made an order regula..


© Stephenson Harwood LLP 2016. Any reference to Stephenson Harwood in this document means Stephenson Harwood LLP and/or its affiliated undertakings. Any reference to a partner is used to refer to a member of Stephenson Harwood LLP.