This chapter focuses on the UK’s territorial constitution, that is, the governance arrangements that result in power being dispersed rather than concentrated in a single set of national institutions. Devolution involved creating new governments in Scotland, Northern Ireland, and Wales, and investing them with powers that were previously exercised at a UK level. Devolution in the UK is therefore intended to be part of the answer to questions that must be confronted in all political systems: where should governmental power lie? And at what level should laws be enacted and the business of government transacted? Local government plays a key role in decision-making, policy formulation, and the delivery of public services across a wide range of areas, including education, housing, personal social services, transport, and planning control.