The most important shareholder remedy is the unfairly prejudicial petition under the Companies Act 2006, s 994. This chapter examines petitioning on the grounds of unfair prejudice, considers the basis on which equitable considerations come into play, addresses the range of conduct which may amount to unfairly prejudicial conduct, and explores the court’s expansive powers to grant relief. The chapter looks at purchase orders and the valuation issues around minority buy-outs as well as the potential for orders against third parties and in favour of the company. The chapter also considers the modern jurisdiction for winding up on the just and equitable ground under the Insolvency Act 1986, s 122(1)(g).