Parliamentary Sovereignty and the Locus of Constituent Power in the United Kingdom

30 Pages Posted: 19 Oct 2018 Last revised: 6 Aug 2019

See all articles by Alan Greene

Alan Greene

University of Birmingham - Birmingham Law School

Date Written: September 11, 2018


This paper argues that parliamentary sovereignty’s assimilation of constituent power — the ultimate power in a legal order to create and posit a constitution — has stultified the development of British constitutional law. The result is a deeply ideological, as distinct from oft-heralded pragmatic, constitutional structure that is incapable of confronting the systemic challenges the UK currently faces. By conceptualising a more antagonistic relation between the Crown in Parliament and ‘the People’ by questioning the democratic credentials of the former, this paper contends that the UK constitutional order can be re-invigorated. This re-appraisal, however, also requires the interrogation of the notion of ‘the People’ in the UK constitutional order itself.

Part I argues that despite what appear to be substantial constitutional reforms in recent decades, parliamentary sovereignty’s inviolability is stultifying deeper constitutional reform. The result is a constitutional law in ‘crisis’ in search of a paradigmatic revolution. A descriptive — as distinct from normative — account of constituent power is then introduced paving the way for a distinction to be drawn between the possessor of constituent power in a constitutional order and ‘the people’. Constituent power in the context of the UK is then discussed, arguing that parliamentary sovereignty incorporates much what the idea of constituent power does. However, this does not mean that constituent power is vested in ‘the people’; rather, the locus of constituent power in the UK should be more forcefully critiqued from a democratic perspective. By acknowledging this distinction, the sacrosanctity of parliamentary sovereignty can be broached and more effective constitutional reform can follow by embracing this tension between Parliament and ‘the People’.

Keywords: constituent power, parliamentary sovereignty, referendums, Brexit, democracy, United Kingdom

Suggested Citation

Greene, Alan, Parliamentary Sovereignty and the Locus of Constituent Power in the United Kingdom (September 11, 2018). Available at SSRN: or

Alan Greene (Contact Author)

University of Birmingham - Birmingham Law School ( email )

Birmingham, AL B15 2TT
United Kingdom

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