ABSTRACT
Judicial cooperation in criminal matters is one of the many fields in which the UK’s withdrawal from the EU has an impact on the nature and intensity of the cooperation between competent national authorities. The definition of new modalities of cooperation during the transition period and beyond does not occur in a legal vacuum. With the globalisation of crime and the necessity to investigate the multilateral dimension of criminal cases, the EU has developed a diversity of cooperation mechanisms with third countries, including through Eurojust, its specialised judicial cooperation agency. The present contribution analyses how Brexit impacts on such precedents of cooperation, in particular in the context of the negotiations of the future relationship between both parties. As it is unclear whether the future arrangements will draw inspiration or depart from precedents of cooperation, EU external relations law offers some guidance, and may shape (or be modified by) their substance.
