The fourth event, led by Dr Napoleon Xanthoulis and co-hosted by the University of Portsmouth and the Centre of European Law, King’s College London, will take place in London in December 2021. It will focus on transnational institutional collaboration in the field of data protection in the post-Brexit era. In the political declaration about their future partnership, the EU and the UK agreed to make arrangements for appropriate cooperation between data protection regulators; yet, it is unclear if and how precisely this will materialise. Maintaining channels of inter-state cooperation contributes to regulatory alignment and the rapid and efficient response to common risks. Moreover, it encourages the exchange of best practices, and reduces the risk of conflicts. This workshop will explore legal and practical obstacles associated with maintaining a UK-EU cooperation at multiple levels of administrative and political hierarchy post-Brexit and identify ways to address them.