This book studies the relationship between British government and faith groups in its international development agenda within and beyond the context of Brexit. It includes aspects of International Relations, International Development, and Religion and Politics to trace the relationship between the British government and faith groups, showing that the relationship is enhanced on three conditions: (i) the resurgence of religion in international affairs; (ii) the attitudes of politicians and political parties towards the third sector (i.e. voluntary and private sectors); and (iii) the rising prominence of the international development agenda in British politics. The third condition triggers the need to understand this relationship in the wake of Brexit. Thus, the book aims to analyze to what extent the increasing prominence of an international development agenda in British politics explains the relationship between the government and faith groups, and ultimately whether Brexit has increased the prominence of international development agenda and brought faith groups into closer relations with the government.