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Public Law

Public Law (3rd edn)

John Stanton and Craig Prescott
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date: 30 November 2023

p. 362. The institutions of government and the separation of powerslocked

p. 362. The institutions of government and the separation of powerslocked

  • John StantonJohn StantonSenior Lecturer in Law at The City Law School, City, University of London
  •  and Craig PrescottCraig PrescottLecturer in Law, Bangor University


This chapter explores the key institutions—the legislature, the executive, and the judiciary—and considers the relevance of the principle of the separation of powers in respect of the UK Constitution. It begins with a discussion of the functions fulfilled by these institutions, including an examination of their structure and key roles, allowing fuller exploration of the separation of powers doctrine in the UK Constitution. The chapter identifies a common distinction drawn between what is known as the pure and partial separation of powers: The former favours total separation, while the latter allows a degree of overlap to the point of ensuring a system of checks and balances. Application of this distinction enables broader exploration of the UK’s application of the separation of powers doctrine.

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