The benefits to the EU and the UK stemming from EU criminal cooperation arrangements (e.g. the European Arrest Warrant, Europol, and information-sharing mechanisms such as SIS II) are self-evident. So, it is no surprise that the UK Government has consistently re-affirmed its commitment to continued participation post-Brexit. However, less than a year away from ‘Brexit-day’, little has been presented in terms of detail regarding how EU-UK police and judicial cooperation might look after withdrawal from the EU. Less still has been said about how the significant obstacles to continued UK participation in these arrangements might be surmounted.