Consequences of Brexit on the competition law and policy of the United Kingdom and the European Union

The subject matter of this paper are the short-term and long-term consequences of Brexit, a historical event and a turning point in the development of the European Union (EU), as well as for the United Kingdom (UK) and the EU competition law and policy. The article first provides a comparative analysis of the historical development of legal regulation of competition in the UK and the EU, including relevant cases from the practice of competition authorities. In particular, the authors focus on the decisions of the European Commission regarding anti-cartel policy. The article further examines to what extent Brexit will influence the mergers and acquisitions policy, antitrust policy, anti-cartel policy, and state aid policy in the UK and the EU. The central question refers to the extent of Brexit's influence on the change of the UK and the EU business environment, and the repercussions that this change will have for the competition law. In the concluding remarks, the authors discuss the direction of future development of the UK competition law, particularly in terms of whether and to what extent the UK law will be harmonized with the EU competition law and case law in this area, or whether there will be a radical turn towards adopting a completely new concept of competition law and policy.