Immigration matters go to the heart of European politics, with the freedom of movement of European nationals to live and work across the bloc enshrined as a founding pillar of the European project. Though the United Kingdom voted to leave the European Union, and negotiations are well underway, there have been no changes, as yet, with regard to the status of EU nationals in the UK, nor the status of UK membership of the EU at the time of writing. Freedom of movement continues to apply to EU and European Economic Area (EEA) nationals in the UK, as well as UK nationals across the continent. As such, Europe currently remains the only continent that is able to quickly and freely deploy its citizens across most of its mainland and its islands without any restrictions. This chapter has been updated to address the current status of the UK’s Brexit negotiations, as well as wider European updates with regards to immigration matters.