Fourth Periodic Review of Westminster constituencies information

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The Fourth Periodic Review of Westminster constituencies was undertaken in the United Kingdom between 1991 and 1995 by the four Boundary Commissions.^[1] As well as changes to constituency boundaries, the Reviews recommended an increase of five seats in England (524 to 529), two in Wales (38 to 40) and one in Northern Ireland (17 to 18), with Scotland continuing to have 72 seats. The number of MPs in the House of Commons therefore increased from 651 to 659.^[2] 144 new constituencies were created, offset by 136 which were abolished. The new boundaries were first used for the 1997 general election.

^ Rossiter 1999, The Boundary Commissions: Redrawing the UK's Map of Parliamentary Constituencies
^ Johnston, Neil (17 November 2022). "Constituency boundary reviews and the number of MPs" (PDF). House of Commons library. p. 76. Retrieved 15 December 2022.

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