This is a multidisciplinary module spanning sociology, anthropology, geography, politics and some history. It examines the causes, nature and impact of migration in and into the geographical area within the 21st century European Union, including the UK. ‘Migration’ is understood to encompass all kinds of mobility except short visits. Taking EU migration as a case study, the module considers the truth of claims that global migration trends today have novel features. We focus particularly on (a) claims about intensified mobility and transnational networking, and (b) the three-way relationship between transnationalism, integration and return migration. We also explore the concept of mobility: is this a sub-set of migration, something completely different, or just another way of looking at the same thing? The module uses EU migration as a case study in ‘migration without borders’, a scenario advocated by some scholars as a radical, more just and more efficient alternative to immigration control. Despite its utopian appearance, this scenario has to an extent been realised for mobile EU citizens. We consider the integration experiences of free-moving migrants; the social, economic and political impact of uncontrolled immigration on receiving countries; and implications for citizenship. We discuss whether these can be reversed, e.g. if a country leaves the EU, or in a pandemic. With regard to the impact on sending countries, the course considers the helpfulness of development-focused migration scholarship when applied to Central and Eastern Europe (CEE), and considers alternative, more holistic approaches. As well as discussing East-West migration within the EU, the course considers other flows — e.g. migration into the EU from non-EU countries, including flows of refugees; south-north labour migration; north-south lifestyle migration; educational migration and migration of highly-skilled professionals in all directions. Throughout, examples drawn from the EU will be contextualised within wider migration scholarship about other parts of the world. Comparisons will also be drawn between European countries inside and outside the EU.