This book examines the factors affecting the health and wellbeing of young people as they transition to adulthood under the shadow of migration control. Drawing on unique longitudinal data, it illuminates how they conceptualize wellbeing for themselves and others in contexts of prolonged and politically induced uncertainty. The authors offer an in-depth analysis of the experiences of over one hundred unaccompanied young migrants, primarily from Afghanistan, Albania and Eritrea. They show the lengths these young people will go to in pursuit of safety, security and the futures they aspire to. Interdisciplinary in nature, the book champions a new political economy analysis of wellbeing in the context of migration and demonstrates the urgent need for policy reform.