M&A and Corporate Disputes and Investigations

We act in public and private M&A and corporate disputes in both the English courts and international arbitrations.

Our contentious M&A lawyers advise leading businesses and business leaders including investment banks, financial institutions, UK and international corporations, funds, private equity houses, private companies, family offices and entrepreneurs on all aspects of M&A and corporate disputes and investigations.

We advise on claims relating to shareholder rights – including derivative claims and unfair prejudice petitions – and disputes regarding the management of joint ventures.

Our expertise includes:

  • issues between signing and completion, including material adverse event triggers;
  • post-transaction representation, warranty and indemnity claims;
  • shareholder disputes including unfair prejudice and derivative actions;
  • disputes concerning working capital and completion statement adjustments;
  • earn-out disputes and other valuation issues;
  • issues arising out of re-organisations and restructurings;
  • fraudulent misrepresentations and the recission of M&A transactions;
  • the operation of tag, drag and pre-emption rights;
  • disputes concerning limited partner interests or general partner obligations in fund structures;
  • partnership and LLP disputes;
  • breach of fiduciary and statutory duties by directors and officers;
  • contentious insolvency disputes; and
  • corporate investigations concerning a range of matters including fraud, breach of duty, data breaches, breach of confidential information, employment issues, reputational matters and corporate crime.

Working closely with our corporate and restructuring lawyers, we aim to devise a strategy to achieve our clients’ objectives, often in the context of regulatory and reputational concerns. We understand what drives an investment or an exit decision and the importance of preserving investment value.

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What people are saying

"Macfarlanes' team is very smart, responsive, realistic and practical. The team forms great relationships with clients, really getting to know them so that they can make commercial, informed decisions. "

Chambers UK 2025