Allen v Gold Reefs of West Africa Ltd [1900] 1 Ch 656 is a UK company law case concerning alteration of a company's articles of association. It held that alterations could not be interfered with by the court unless the change that had been made was not bona fide for the benefit of the company as a whole. This rule served as a marginal form of minority shareholder protection at common law, before the existence of any unfair prejudice remedy.