This accessible textbook provides students with the knowledge and background they need to understand the concept of citizenship in the UK, the EU, and global institutions. The book combines an outline of competing perspectives on citizenship with an evaluation and appreciation of the implications that class, gender, ethnicity, disability, and age may have for the social and citizenship status of certain individuals and groups. It offers a clear sense of the history of citizenship and the key theoretical debates that have informed contemporary understandings of the concept. Fully revised and updated, this second edition includes a new chapter on ageing and older citizens, plus new topical sections. The book's easy-to-digest text boxes will aid learning and teaching.