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House of Commons Library
Research Briefing
Parliamentary constituency boundaries are reviewed periodically by independent Boundary Commissions. This House of Commons Library briefing summarises the current rules and procedures for boundary changes and how they have changed over time. It also gives an overview how the number of MPs has reached the current level of 650.
House of Commons Library
Research Briefing
Constituencies are reviewed periodically by independent Boundary Commissions, one for each part of the UK. This briefing outlines how the public can get involved in the consultation stages.
House of Commons Library
Insight
Final consultations on proposals to change parliamentary constituency boundaries are due or underway.
House of Commons Library
Insight
Glasgow Central could be divided up between five constituencies and Swansea West would be among the most changed seats in Wales
House of Commons Library
Insight
The Boundary Commission for England has announced its initial proposals for new constituency boundaries.
House of Commons Library
Insight
A look at how voter weight would change in different areas if the constituency boundary review proposals go ahead.
House of Commons Library
Insight
This Insight looks at which boundaries are proposed to change in England, and how much of existing constituencies would be transferred into new ones.
House of Commons Library
Insight
In this Insight, we explain how and when constituency names are chosen, and the role of the public in the process.
House of Commons Library
Research Briefing
The Parliamentary Constituencies (Amendment) Bill 2017-19 is a Private Member's Bill that sought to change the Rules for Redistribution of Parliamentary constituencies. This briefing summarises the main changes that the Bill would make if passed.
House of Commons Library
Insight
Final plans to update constituency boundaries were published on 10 September 2018. What is the boundary review and what are the next steps?
House of Commons Library
Research Briefing
The Parliamentary Constituencies (Amendment) Bill 2016-17 was introduced 29 June 2016 and had its Second Reading on Friday 18 November 2016. The Bill was a Private Member's Bill that sought to amend the Rules of Redistribution of Parliamentary constituencies.
House of Commons Library
Research Briefing
This Commons Library Briefing Paper examines the initial proposals for new Westminster constituency boundaries in Wales, published as part of the 2018 Review. It looks at how these proposals affect existing constituencies, and the electorate and area of the proposed constituencies.
House of Commons Library
Research Briefing
This Commons Library Briefing Paper examines the initial proposals for new constituency boundaries in Scotland. It looks at the extent to which proposed constituencies can be identified with existing seats, and the area and electorates of the proposed seats.
House of Commons Library
Research Briefing
This Commons Library Briefing Paper examines the initial proposals for new constituency boundaries in England. It looks at the extent to which proposed constituencies can be identified with existing seats, and the area and electorates of the proposed seats.
House of Commons Library
Research Briefing
This table lists the number of seats in the House of Commons from 1707 to present day.
House of Commons Library
Research Briefing
This list provides information on the number of MPs, Lords and staff in Parliament.
House of Commons Library
Research Briefing
The Parliamentary Constituencies Bill 2019-21
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