The UACES Research Network (RN) on the Effective Enforcement of EU Law and Policy (EFFEN) continues to bring together scholars at different stages of their careers who are exploring the multifarious aspects of the enforcement EU law. In November 2019, a half-day workshop was held at Cardiff University in partnership with Cardiff University’s Centre for European Law and Governance (CELAG). The first session focused on the effectiveness of the enforcement of EU law, and how it