Breaches of EC and UK competition laws (mainly anticompetitive agreements or concerted practices 1 and the abuse of market power) 2 are punishable by the competition authorities. 3 Individuals, who have suffered loss, particularly trade rivals, can claim damages flowing from antitrust practices, inter alia, through the "statutory competition torts". These torts do not seem to require the claimant to prove that the defendant intended to harm her whereas another potential route for claimants, the common-law economic torts, do. This fact may partly explain why commentators have paid little attention to the mental element in antitrust tort liability. This article argues that the competition torts trigger strict liability for the harm caused to victims but, like the economic torts, presuppose intentional conduct. Competition statutes can only be breached through deliberate acts which, although aimed at indeterminate consumers, often involve the agent's intention to injure identifiable adversaries. Thus, the competition torts neither entail absolute strict liability (i.e., for merely causing damage) nor are based on negligently occasioned harm. The problem can be stated simply. Business competitors owe no duty not to injure each other negligently or intentionally, but they are at liberty to defeat one another as a foreseeable and inexorable side-effect of legitimate commercial battle. However, trade opponents are constrained by the economic or competition torts. These will ordinarily prohibit wrongful means on the one hand and, on the other, acts accompanied by specific forms of intention, e.g., to cause the breach of the claimant's contract in inducing breach of contract, 4 or to harm the claimant in her trade interests, a requirement found in the