Boundary Commission - Project Open Gov

An independent body involved in reviewing parliamentary constituency boundaries.

Category: Parliament and elections Public bodies and agencies

Also used as: Boundary Commissions, parliamentary boundary commission, boundary commissioners

Source / explainer: Read the UK Parliament explainer on constituencies

Last reviewed: 3 August 2026

A Boundary Commission is an independent body involved in reviewing parliamentary constituency boundaries. The UK has separate Boundary Commissions for England, Scotland, Wales and Northern Ireland. Their work helps shape the map of parliamentary constituencies used at general elections.

Related terms

Boundary ReviewA review of parliamentary constituency boundaries.ConstituencyA geographical area represented by an elected representative, such as an MP.General ElectionAn election in which voters choose MPs for all House of Commons constituencies.Parliamentary ConstituencyA geographical area represented by one MP in the House of Commons.