Each Concentrate revision guide is packed with essential information, key cases, revision tips, exam Q&As, and more. Concentrates show you what to expect in a law exam, what examiners are looking for, and how to achieve extra marks. This chapter discusses the definition of parliamentary sovereignty, AV Dicey’s views concerning parliamentary sovereignty, the jurisdiction of the courts, whether the substance of an Act of Parliament can be challenged, the enrolled bill rule; whether the jurisdiction of the court over an Act of Parliament can be enlarged; the rule in Pepper v Hart; entrenchment clauses; prospective formula; the effect of the Human Rights Act 1998; the devolution of the legislative process.