This chapter focuses on the transposition of the Antitrust Damages Directive in the United Kingdom. It first provides a general background on the transposition process, with emphasis on developments in relation to private litigation involving both UK and EU competition law in the UK courts. It then considers the substantive and temporal scope of the UK transposition measure before analysing some of the specific issues concerning implementation of the Directive, such as those relating to limitation periods, binding force of competition authority decisions, disclosure and protection of certain documents/admissability of evidence, presumption of harm and quantification of damages, passing-on defence and indirect purchasers, joint and several liability, parent company liability, consensual dispute resolution, collective redress, litigation costs and funding, and specialised court structure.