A shareholder’s derivative action is a claim brought by a shareholder on behalf of a company to enforce the company’s rights, usually against directors or others alleged to have committed wrongs such as breach of duty, negligence or breach of trust. Any remedy (for example damages or an account of profits) belongs to the company, not the shareholder personally.In England and Wales and Northern Ireland, derivative claims are primarily governed by the Companies Act 2006 (ss.260–264), which sets out a statutory procedure and requires the court’s permission at a two‑stage test, including a prima facie assessment on the papers. Common law derivative actions survive only in very limited circumstances.In Scotland, derivative proceedings are also available under the Companies Act 2006, with Scottish procedural rules applying to permission and case management.In Ireland, shareholder derivative actions remain largely governed by common law principles, supplemented by the Companies Act 2014 (for example, oppression remedies may offer alternative routes).Derivative actions are exceptional remedies, tightly controlled by the courts, and typically used where wrongdoers are in control of the company and prevent it from suing in its own name.