Our focus is on providing clear, candid advice to our clients. We act for companies in B2B contract claims and shareholders, directors and partners, covering everything from unfair prejudice petitions and derivative actions by shareholders to joint venture and shareholders disputes and breach of duty claims against directors.

Most of our cases are international in scope, where main or ancillary proceedings may be taking place in other jurisdictions. There may also be issues of jurisdiction or the application of foreign law. We have particular expertise acting in cases where significant assets are at stake, and have successfully defended clients against potential multi-million-pound losses.

Notable Experience

  • Defending a well known Russian aluminium company against claims worth in excess of US$ 100m brought against it by two Russian oligarchs regarding the alleged breach of a shareholder agreement and dishonest diversion of assets.
  • A US$30 million shareholder dispute between investors in a collapsed oil and gas joint venture, with related criminal proceedings in Germany and Luxembourg and mutual legal assistance requests between EU states.
  • Acting for foreign corporate shareholders in a Commercial Court dispute concerning a joint venture, with related criminal investigation.
  • Representing investors/shareholders in a multi-jurisdictional dispute, including obtaining a worldwide freezing order.
  • Acting in an unfair prejudice petition brought by a shareholder investor in an investment management company, with in excess of £100 million under management.
  • Acting in a breach of duty claim brought against a director of a trading company by its liquidator (appointed by the Inland Revenue), in connection with supposed fraudulent trading, and in connected director disqualification proceedings.
  • Acting for the investors/shareholders in a $10 million unfair prejudice claim relating to an Anglo/American education joint venture.
  • Representing the Management team against a major insurer in a disputed $1 billion merger dispute.
  • Representing the appellant in a successful appeal from the BVI Court of Appeal to the Privy Council in what is now the leading authority on rectification of a company register.
  • Acting in a US$100 million unfair prejudice claim relating to oil refineries in Ukraine.
  • Representing a former director of a listed company in respect of a £200 million claim said to arise from misleading listing particulars.
  • Prosecuting and defending numerous claims for breach of fiduciary duties by directors, including for a listed company in a US$500 million claim and defending a former director of a football club.
  • Acting for a company seeking to protect against the misuse of proprietary confidential information by obtaining orders for delivery up of documents and an injunction to prevent the use of confidential information.

News & Insights

14.04.25

Law 360 has reported on PCB Byrne’s representation of the primary Defendant in the ongoing trial of PIFSS v Al Rajaan & Others.

24.02.25

Further word on Supreme Court’s decision in important Insolvency Act case

19.02.25

UK Supreme Court confirms scope of s423 Insolvency Act

06.02.25

Cerberus refused permission to appeal €400 million judgment in favour of PCB Byrne client Banco Sabadell