This book explores debates in constitutionalism around the attempt to map the fragmented nature of governance in the new constitutional landscape of the UK, the EU and elsewhere. The book examines these issues at all levels from the EU through to the details of some of the new devolutionary schemes. As well as examining how constitutionalism operates at levels and in sites beyond the traditional ambit of structures and institutions, the essays seek to respond to the challenge of securing accountability and participation in the new climate.