British foreign policy stands at a turning point following the 2016 ‘Brexit’ referendum. Drawing on role theory, we trace the United Kingdom’s efforts to establish new foreign policy roles as it interacts with the concerned international actors. We find that the pro-Brexit desire to ‘take back control’ has not yet translated into a cogent foreign policy direction. In its efforts to avoid adopting the role of isolate, the United Kingdom has projected a disoriented foreign policy containing elements of partially incompatible roles such as great power, global trading state, leader of the Commonwealth, regional partner to the European Union (EU) and faithful ally to the United States. The international community has, through processes of socialisation and alter-casting, largely rejected these efforts. These role conflicts between the United Kingdom and international actors, as well as conflicts among its different role aspirations, have pressed UK policies towards its unwanted isolationist role, potentially shaping its long-term foreign policy orientation post-Brexit.