513:
319:. Previously, Parliament voted on the recommendations and, although it could not make any alterations to them, it could reject them in their entirety. In addition, although this power was never exercised, for many years the legislation gave the Secretary of State the power to modify a commission's recommendations. The new procedures further strengthen the separation of the creation of constituency boundaries from those elected for the resulting electoral areas, with the aim of eliminating any scope for
764:
750:
659:. That Act specifies that there are 73 constituencies for the Scottish Parliament: Na h-Eileanan an Iar, the Orkney Islands, the Shetland Islands and 70 others. The Act also specifies that the constituencies are grouped into eight regions to allow the return of list members elected by proportional representation to the parliament. The Boundary Commission for Scotland conducted a review of these boundaries between 2007 and 2010, and their recommendations were
337:
88:
464:
Customarily, each commission conducted a complete review of all constituencies in its part of the United
Kingdom every eight to twelve years. In between these general reviews, the commissions were able to conduct interim reviews of part of their area of responsibility. The interim reviews usually did
163:
the electorate (number of registered voters) of each constituency must be within 5% of the United
Kingdom electoral quota. The electoral quota is the average number of electors per constituency, defined as the total mainland electorate divided by the number of mainland constituencies, where
691:. The Act required the Boundary Commission for Wales to group the constituencies into electoral regions, to allow the return of list members elected by proportional representation to the Assembly. The Boundary Commission for Wales's Fifth General Review resulted in revised
570:, the review was recommenced in 2016 and final recommendations were submitted by the four commissions in September 2018 and laid before Parliament. However the revised proposals were never brought forward by the Government for approval and, further to the passing of the
550:
was launched on 4 March 2011 by the
Boundary Commission for England, the Boundary Commission for Scotland, the Boundary Commission for Wales and the Boundary Commission for Northern Ireland. The Sixth Review would have resulted in 600 constituencies for the
1221:
586:, was launched by the four commissions on 5 January 2021. Under the new rules governing the number of constituencies in each nation, England would have 543 constituencies (+10), Wales 32 (-8), Scotland 57 (-2) and Northern Ireland 18 (unchanged).
1557:
304:. The Government may not modify any of the commissions' recommendations unless specifically requested to do so by the relevant commission. On approval by the Privy Council, the new constituencies come into effect for the next
468:
Under the rules in force before 2011, the number of constituencies in Great
Britain (England, Wales, and Scotland) had to "not be substantially greater or less than 613", of which at least 35 had to be in Wales. The
1232:
246:
a six-week secondary consultation period allowing scrutiny of all comments submitted during the initial consultation and including a number of public hearings which offer an opportunity to give views orally;
1587:
1403:
261:
in 2007, it is often difficult to do so due to the large electorates in these wards, and therefore a collection of complete wards may not give an electorate that is within the required electoral range.
702:
The
Boundary Commission reported in 2016 proposing to reduce the number of UK Parliament constituencies in Wales to 29, on the basis that all constituencies must have at least 71,031 voters. While the
2120:
1564:
1837:
1832:
1257:
232:
As these factors can to an extent be mutually conflicting, each commission has discretion on how it applies them. In so doing, each commission aims for a consistent approach within a review.
671:, these two sets of areas do not fit together neatly. Responsibility for Scottish Parliament boundary reviews passed to the Local Government Boundary Commission for Scotland in May 2017.
735:
835:
710:
have indicated a preference for coterminosity (meaning the mirroring of seat boundaries in Wales along the lines of the 2016 proposed reforms to the Welsh seats in the UK Parliament).
1670:
1705:
692:
538:
There are currently 533 constituencies in
England, 40 constituencies in Wales, 59 constituencies in Scotland and 18 constituencies in Northern Ireland, providing a total of 650.
253:
It has been normal practice for local government electoral wards to be used as building blocks for constituencies, although there is no legislative requirement to do so. In some
2110:
527:, which was given effect in Wales by an Order made in 2006, in England by an Order from 2007 and in Northern Ireland by an Order from 2008, with the new boundaries used for the
434:
502:
there was not previously a limit on the area of a constituency, but in practice, no constituency has ever exceeded the 13,000 square kilometre limit introduced by the 2011 Act;
2084:
559:. In January 2013, parliamentary opposition to proposed legislative amendments because of a lack of consensus in the coalition resulted in the review being suspended.
1282:
660:
153:
1930:
1787:
1550:
703:
696:
445:
399:
149:
777:
354:
105:
34:
1981:
727:
422:
1698:
1641:
1631:
589:
The final consultation for
England began on 8 November 2022 with the publication of the Revised Proposals and lasted for four weeks, ending on 5 December.
2105:
1920:
1915:
1646:
1636:
1626:
1605:
615:
547:
524:
407:
403:
1376:
1996:
1665:
1659:
1652:
782:
583:
571:
453:
316:
1961:
637:
169:
1759:
622:
165:
61:
1308:
2059:
1910:
1764:
1749:
1691:
1170:
198:
a constituency with an area of more than 12,000 square kilometres (4,630 sq mi) may have a smaller electorate than the usual limit; and
1471:
2001:
632:
505:
the consultation mechanism was significantly different: consultation periods only lasted four weeks, and could be followed by local inquiries;
2115:
1610:
1047:
1028:
1895:
1258:"Boundary Commission for England publishes final recommendations for new Parliamentary constituencies | Boundary Commission for England"
499:
the size of the electorates was just one of several rules, rather than being subject to a numerical limit which overrides other factors;
1971:
1905:
1222:"Boundary Commission for England announces publication date for revised constituency proposals and launch of final public consultation"
2042:
1976:
1872:
1283:"Boundary Commission for Northern Ireland Publishes Final Recommendations Report of the 2023 Review of Parliamentary Constituencies"
1120:
1882:
1446:
177:
890:
272:
Boundary changes can have a significant effect on the results of elections, but boundary commissions do not take any account of
843:
212:
38:
1066:
592:
All four
Commissions submitted their Final Recommendations Reports to the Speaker of the House of Commons on 27 June 2023. An
1935:
1925:
1842:
1827:
1822:
1817:
1812:
1807:
1802:
1797:
1792:
1782:
1769:
912:
699:
removed the link with
Westminster constituencies, and there is currently no statutory review body for Senedd constituencies.
485:
430:
411:
395:
205:
Having satisfied the electorate and area requirements, each commission can also take into account a number of other factors:
145:
1966:
567:
556:
532:
528:
517:
258:
71:
1333:
531:. The most recent general review in Scotland was given effect in 2005, and the resulting constituencies were used in the
301:
289:
140:
The boundary commissions, which are required to report every eight years, must apply a set series of rules when devising
582:
Following the passing of the 2020 Act, which reinstated the number of constituencies to 650, a new review, known as the
2125:
2052:
815:
1986:
1890:
481:
Islands were not to be combined with any other areas. Northern
Ireland had to have between 16 and 18 constituencies.
452:
made substantial changes to the legislation governing constituency boundary reviews; this was further amended by the
376:
127:
191:
There are a small number of exceptions to the numerical limit on electorate which are specified in the legislation:
1951:
1900:
1720:
1597:
787:
688:
643:
Changes to parliamentary boundaries do not themselves impact on which local councils are responsible for any area.
293:
2064:
1991:
1867:
1095:
269:
at the time of the start of the review, and not the electorate at the end of a review, or the total population.
358:
109:
30:
1537:
1380:
1196:
2047:
792:
680:
201:
constituencies in Northern Ireland may be subject to slightly different limits under certain circumstances.
726:
are the same as the constituencies that are used for the United Kingdom Parliament. From 1998 to 2016 six
2027:
1410:
684:
608:
The scope of the boundary commissions' work is limited to areas for election to the UK House of Commons.
449:
2032:
1592:
1475:
801:
723:
719:
664:
552:
865:
209:"special geographical considerations" including the size, shape and accessibility of a constituency;
2079:
1744:
707:
496:): each commission had limited discretion to specify the number in its part of the United Kingdom;
276:
in their deliberations, or consider what the effect of their recommendations on the outcome of an
2037:
1542:
1309:"28 June 2023 - 2023 Review Report laid before Parliament | The Boundary Commission for Scotland"
563:
512:
347:
243:
an eight-week initial written consultation period following the publication of Initial Proposals;
187:
the area of a constituency must be no more than 13,000 square kilometres (5,020 sq mi).
98:
1044:
1025:
195:
the five island constituencies are permitted to have a smaller electorate than the usual limit;
982:
960:
938:
769:
706:
removed the link between UK Parliament and Senedd seat boundaries, organisations such as the
1004:
473:
was not to be partitioned and was to be included in a seat that referred to it by name. The
611:
523:
The review that gave rise to most of the constituency boundaries currently in force is the
426:
254:
1517:
603:
600:(No. 1230 of 2023), was made on 15 November 2023 and came into force on 29 November 2023.
8:
1683:
668:
663:. Since the legislation requires different numbers of constituencies in Scotland for the
652:
627:
236:
2006:
1363:
1145:
429:
envisaged that the functions of the boundary commissioners would be transferred to the
141:
1424:
508:
reviews were only carried out every eight to twelve years instead of every five years.
300:
which gives effect to the recommendations must be submitted within four months to the
2069:
1357:
656:
438:
939:"The Parliamentary Constituencies and Assembly Electoral Regions (Wales) Order 2006"
1063:
809:
805:
593:
305:
297:
288:
Once a commission has completed its review, it submits a report to the appropriate
273:
54:
916:
465:
not yield drastic changes in boundaries, while the general reviews generally did.
1956:
1754:
1739:
1070:
1051:
1032:
755:
60:
Each commission comprises four members, three of whom take part in meetings. The
1522:
470:
320:
266:
22:
2099:
1497:
181:
159:
Firstly, each proposed constituency has to comply with two numerical limits:
1862:
731:
249:
a four-week consultation period following publication of Revised Proposals.
1731:
1171:"2023 Review: Electoral Quota and Allocation of Constituencies Announced"
415:
309:
1532:
1082:
749:
604:
Relationship with local government, devolved parliaments and assemblies
361: in this section. Unsourced material may be challenged and removed.
222:
112: in this section. Unsourced material may be challenged and removed.
66:
1498:"Assembly Members (Reduction of Numbers) Act (Northern Ireland) 2016"
796:
336:
87:
2022:
736:
Assembly Members (Reduction of Numbers) Act (Northern Ireland) 2016
478:
277:
46:
1572:
265:
The law specifies that the electorate used during a review is the
1527:
1334:"Wales' new parliamentary constituencies published | BComm Wales"
42:
1379:. bcomm-scotland.independent.gov.uk. 26 May 2010. Archived from
983:"The Parliamentary Constituencies (Northern Ireland) Order 2008"
651:
The procedure for reviews of constituencies and regions for the
410:. The 1949 Act was amended in 1958 and 1979 and replaced by the
2121:
Non-departmental public bodies of the United Kingdom government
474:
459:
435:
Local Democracy, Economic Development and Construction Act 2009
915:. Boundarycommission.org.uk. 14 September 2011. Archived from
555:: a reduction from the 650 constituencies in existence at the
239:, the consultation periods are specified in the legislation:
50:
804:
which proposed adjustments to the border between the (then)
406:. The 1944 Act was amended in 1947 and then replaced by the
402:. They were first established as permanent bodies under the
1713:
1474:. Boundary Commission for Northern Ireland. Archived from
74:
is appointed to each boundary commission as deputy chair.
1377:"First Periodic Review of Scottish Parliament Boundaries"
633:
Local Government Boundary Commission for Northern Ireland
1005:"The Parliamentary Constituencies (Scotland) Order 2005"
913:"Extract from the Parliamentary Constituencies Act 1986"
418:
from 1944 to 1986 were generally incremental in nature.
228:
inconveniences resulting from changes to constituencies.
1931:
Parliamentary Voting System and Constituencies Act 2011
961:"The Parliamentary Constituencies (England) Order 2007"
704:
Parliamentary Voting System and Constituencies Act 2011
697:
Parliamentary Voting System and Constituencies Act 2011
446:
Parliamentary Voting System and Constituencies Act 2011
400:
Parliamentary Voting System and Constituencies Act 2011
150:
Parliamentary Voting System and Constituencies Act 2011
2111:
Constituencies of the Parliament of the United Kingdom
778:
Constituencies of the Parliament of the United Kingdom
516:
The current constituencies showing the results of the
1982:
Political Parties, Elections and Referendums Act 2000
1404:"The review of parliamentary constituencies in Wales"
423:
Political Parties, Elections and Referendums Act 2000
184:. The total number of constituencies is fixed at 650.
170:
1977:
European Parliamentary Elections Act 1999 (repealed)
745:
488:, the terms of review were significantly different:
394:
The commissions are currently established under the
283:
41:. There are four boundary commissions: one each for
1921:
House of Commons (Redistribution of Seats) Act 1949
1916:
House of Commons (Redistribution of Seats) Act 1944
548:
Sixth Periodic Review of Westminster constituencies
408:
House of Commons (Redistribution of Seats) Act 1949
404:
House of Commons (Redistribution of Seats) Act 1944
225:
which would be broken by changes to constituencies;
16:
Body which defines British electoral constituencies
1997:Electoral Registration and Administration Act 2013
783:2023 Periodic Review of Westminster constituencies
618:are reviewed by the separate but similarly named:
492:the total number of constituencies was not fixed (
1962:Corrupt and Illegal Practices Prevention Act 1883
638:Local Democracy and Boundary Commission for Wales
2097:
623:Local Government Boundary Commission for England
296:. Once all four reports have been submitted, an
164:"mainland" excludes five island constituencies:
70:but does not play any part in the review, and a
2060:2011 United Kingdom Alternative Vote referendum
1967:European Assembly Elections Act 1978 (repealed)
1262:boundarycommissionforengland.independent.gov.uk
870:boundarycommissionforengland.independent.gov.uk
683:specified that the constituencies for the then
2002:Dissolution and Calling of Parliament Act 2022
1574:Reviews of Westminster constituency boundaries
833:
235:When a commission publishes its proposals for
33:responsible for determining the boundaries of
1699:
1558:
1121:"2023 Review of UK Parliament Constituencies"
693:Assembly constituencies and electoral regions
312:before then use the pre-existing boundaries.
77:
866:"About us | Boundary Commission for England"
713:
460:Past reviews of UK Parliament constituencies
1896:Parliamentary Boundaries (Ireland) Act 1832
1359:The Parliamentary Constituencies Order 2023
891:"June 2006: Boundary changes favour Tories"
834:Clift-Matthews, Michelle (7 January 2015).
598:The Parliamentary Constituencies Order 2023
574:, the Sixth Review was formally abandoned.
257:in England, and in Scotland, following the
2106:Boundary commissions in the United Kingdom
1992:Fixed-term Parliaments Act 2011 (repealed)
1972:Registration of Political Parties Act 1998
1906:Redistribution of Seats (Ireland) Act 1918
1730:
1706:
1692:
1565:
1551:
1425:"New map cuts number of MPs by a quarter"
722:provides that the constituencies for the
377:Learn how and when to remove this message
128:Learn how and when to remove this message
1533:Boundary Commission for Northern Ireland
1287:Boundary Commission for Northern Ireland
1175:Boundary Commission for Northern Ireland
1085:Boundary Commission for Northern Ireland
541:
511:
315:These provisions were brought in by the
64:chairs each of the boundary commissions
1401:
441:(of 2000) effective from 1 April 2010.
2098:
1714:Electoral reform in the United Kingdom
646:
218:boundaries of existing constituencies;
1936:Parliamentary Constituencies Act 2020
1926:Parliamentary Constituencies Act 1986
1687:
1546:
1313:www.bcomm-scotland.independent.gov.uk
687:were to be the same as those for the
572:Parliamentary Constituencies Act 2020
486:Parliamentary Constituencies Act 1986
454:Parliamentary Constituencies Act 2020
412:Parliamentary Constituencies Act 1986
396:Parliamentary Constituencies Act 1986
317:Parliamentary Constituencies Act 2020
154:Parliamentary Constituencies Act 2020
146:Parliamentary Constituencies Act 1986
2116:Ministry of Justice (United Kingdom)
359:adding citations to reliable sources
330:
110:adding citations to reliable sources
81:
2085:Parliamentary franchise (1885–1918)
1326:
431:United Kingdom Electoral Commission
13:
1189:
1163:
1088:
816:Redistricting in the United States
259:introduction of multi-member wards
180:(Isle of Anglesey) and two on the
14:
2137:
1987:Electoral Administration Act 2006
1891:Parliamentary Boundaries Act 1832
1511:
1402:Roberts, Owain (September 2011).
836:"UK parliamentary constituencies"
433:, but this never transpired: the
284:Implementation of recommendations
144:. These rules are set out in the
1952:Parliamentary Elections Act 1868
1901:Redistribution of Seats Act 1885
1523:Boundary Commission for Scotland
1231:. 4 October 2022. Archived from
1125:Boundary Commission for Scotland
1054:Boundary Commission for Scotland
788:Delimitation Commission of India
762:
748:
450:Con-Lib Dem coalition government
335:
86:
2065:Elections in the United Kingdom
1518:Boundary Commission for England
1490:
1464:
1439:
1417:
1395:
1369:
1351:
1301:
1275:
1250:
1229:Boundary Commission for England
1214:
1201:Boundary Commission for England
1138:
1113:
1100:Boundary Commission for England
1076:
1064:Sixth Review (English language)
1057:
1038:
1035:Boundary Commission for England
398:, most recently amended by the
346:needs additional citations for
97:needs additional citations for
62:speaker of the House of Commons
1911:Government of Ireland Act 1920
1019:
997:
975:
953:
931:
905:
883:
858:
840:Office for National Statistics
827:
738:reduced this to five members.
596:adopting the recommendations,
577:
389:
31:non-departmental public bodies
1:
1528:Boundary Commission for Wales
1366:. Retrieved 29 November 2023.
1150:Boundary Commission for Wales
1073:Boundary Commission for Wales
821:
893:. Epolitix.com. 25 June 2006
793:Electoral Affairs Commission
689:UK Parliament at Westminster
681:Government of Wales Act 2006
35:parliamentary constituencies
7:
2028:Unreformed House of Commons
1451:www.electoral-reform.org.uk
1411:National Assembly for Wales
741:
685:National Assembly for Wales
10:
2142:
2033:Rotten and pocket boroughs
427:PM Tony Blair's government
326:
78:Considerations and process
2126:Electoral redistributions
2015:
1944:
1881:
1855:
1778:
1719:
1619:
1580:
802:Irish Boundary Commission
724:Northern Ireland Assembly
720:Northern Ireland Act 1998
714:Northern Ireland Assembly
674:
665:United Kingdom Parliament
553:United Kingdom Parliament
533:May 2005 general election
529:May 2010 general election
171:
2080:Parliament in the Making
1050:8 September 2012 at the
708:Electoral Reform Society
152:and subsequently by the
2038:University constituency
1868:England and Wales, 1835
1755:England and Wales, 1867
1740:England and Wales, 1832
1538:Election maps of the UK
1031:28 January 2011 at the
730:were elected from each
1447:"Reshaping the Senedd"
1096:"2023 Review launched"
520:
518:2019 general election.
770:United Kingdom portal
661:implemented from 2011
612:Local authority areas
568:2015 general election
557:2010 general election
542:Sixth Periodic Review
525:Fifth Periodic Review
515:
267:registered electorate
255:metropolitan boroughs
37:for elections to the
2075:Boundary commissions
1069:21 July 2011 at the
1007:. Legislation.gov.uk
985:. Legislation.gov.uk
963:. Legislation.gov.uk
941:. Legislation.gov.uk
355:improve this article
172:Na h-Eileanan an Iar
148:, as amended by the
106:improve this article
27:boundary commissions
1883:Constituency reform
1427:. 13 September 2016
1383:on 8 September 2012
669:Scottish Parliament
655:is set down by the
653:Scottish Parliament
647:Scottish Parliament
628:Boundaries Scotland
292:who lays it before
237:public consultation
166:Orkney and Shetland
2007:Elections Act 2022
1945:Other related Acts
1502:legislation.gov.uk
1364:legislation.gov.uk
1338:bcomm-wales.gov.uk
1238:on 1 November 2022
718:Section 33 of the
521:
290:Secretary of State
2093:
2092:
2070:Corrupt practices
1851:
1850:
1721:Representation of
1681:
1680:
846:on 5 January 2016
657:Scotland Act 1998
448:passed under the
439:Act of Parliament
387:
386:
379:
176:(Western Isles),
138:
137:
130:
2133:
2043:Women's suffrage
1856:Municipal Reform
1728:
1727:
1708:
1701:
1694:
1685:
1684:
1620:Periodic reviews
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1505:
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1373:
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1218:
1212:
1211:
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1207:
1193:
1187:
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1184:
1182:
1177:. 5 January 2021
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1142:
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1016:
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1001:
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979:
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957:
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950:
948:
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935:
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909:
903:
902:
900:
898:
887:
881:
880:
878:
876:
862:
856:
855:
853:
851:
842:. Archived from
831:
810:Northern Ireland
806:Irish Free State
772:
767:
766:
765:
758:
753:
752:
594:order in council
382:
375:
371:
368:
362:
339:
331:
306:general election
298:Order in Council
213:local government
174:
173:
133:
126:
122:
119:
113:
90:
82:
72:High Court judge
55:Northern Ireland
39:House of Commons
2141:
2140:
2136:
2135:
2134:
2132:
2131:
2130:
2096:
2095:
2094:
2089:
2011:
1957:Ballot Act 1872
1940:
1877:
1847:
1774:
1723:the People Acts
1722:
1715:
1712:
1682:
1677:
1615:
1576:
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1514:
1509:
1496:
1495:
1491:
1481:
1479:
1478:on 1 April 2014
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1129:
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1077:
1071:Wayback Machine
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1058:
1052:Wayback Machine
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1033:Wayback Machine
1024:
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1008:
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1002:
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988:
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