Unaccompanied children and adolescents seeking protection in the UK are among the most vulnerable migrant groups, and often find themselves in a hostile policy environment after enduring traumatic journeys. This book offers an in-depth analysis of the lived experiences of belonging, and the politics and policies of migration. Focusing on unaccompanied young migrants, it investigates the conditions and nature of belonging in the face of the uncertainty, ambiguity and violence of the UK asylum system. Drawing on interviews and the Deleuzo-Guattarian concepts of assemblage, the book provides an empirical and theoretical examination of the belonging of unaccompanied young migrants seeking protection in the UK. Through compelling accounts, the author portrays the complex and paradoxical nature of belonging under precarious conditions, shedding light on the tenacity and fragility of belonging for unaccompanied young migrants.