2023 Periodic Review of Westminster constituencies

Review of UK electoral boundaries

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United Kingdom legislation

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Parliamentary Constituencies Act 2020
Act of Parliament

Long title An Act to make provision about reports of the Boundary Commissions under the Parliamentary Constituencies Act 1986; to make provision about the number of parliamentary constituencies and other rules for the distribution of seats; and for connected purposes.
Citation 2020 c. 25
Royal assent 14 December 2020
Status: Current legislation
Text of statute as originally enacted
Text of the Parliamentary Constituencies Act 2020 as in force today (including any amendments) within the United Kingdom, from legislation.gov.uk.

The 2023 Periodic Review of Westminster constituencies was the most recent cycle of the process to redraw the constituency map for the House of Commons. The new constituency borders were approved by the Privy Council on 15 November 2023[1] and came into law on 29 November 2023.[2]

Legal basis[edit]

The process for periodic reviews of parliamentary constituencies in the United Kingdom is governed by the Parliamentary Constituencies Act 1986, as amended by the Parliamentary Voting System and Constituencies Act 2011 and subsequently by the Parliamentary Constituencies Act 2020.[3]

Individual registration[edit]

The 2023 review was the successor to the 2018 Periodic Review of Westminster constituencies, which was ultimately abandoned after it failed to pass into law. After abandonment of several previous reviews since 2015, the 2023 review was set to be the first review based on electoral registers drawn up using Individual Electoral Registration, which Parliament approved from 2014–15, an anti-fraud and personally empowering system that is in place in most of the world, replacing the older household registration that had been condemned by the worldwide Office for Democratic Institutions and Human Rights (OSCE/ODIHR).[4] By every, routine, local government canvass reaching slightly fewer imminent attainers of the age of 18 effectively than the old system of household registration[4] a small group of LSE experts have blogged, very marginally favours the Conservatives.[5] Local election offices are funded to implement mitigating measures to minimise any such disproportionate impacts.[4] The Command Papers were sponsored and ordered by a Deputy Prime Minister, Nick Clegg, a Liberal Democrat.


Under current legislation, the four Boundary Commissions of the United Kingdom were required to report on their next review of the boundaries of parliamentary constituencies before 1 July 2023.[3] In order to meet this deadline, the Commissions began their work on 5 January 2021. Following three rounds of public consultation, all four Commissions submitted their final proposals to the Speaker of the House of Commons on 27 June 2023. The Speaker immediately laid these before Parliament and the reports were published on the respective Commissions’ websites the following day.[6] The new boundaries were formally introduced into UK law on 15 November 2023 through The Parliamentary Constituencies Order 2023.[7] (The original deadline of the end of October was missed by the government, which, according to the Act, must only happen in exceptional circumstances).

A description of the review process is detailed in Timeline of the 2023 Periodic Review of Westminster constituencies.

Size of constituencies[edit]

The four Boundary Commissions formally launched their 2023 reviews on 5 January 2021,[8][9][10][11] to coincide with the release by the Office for National Statistics (ONS) of electorate data from analysis of the electoral registers that had been published on 2 March 2020.[12] The commissions jointly calculated the relevant electoral quota/range to be used for the 2023 review and the allocation of parliamentary constituencies between the four nations. The English commission further divided its allocation between the nine regions of England.

The electorate of the United Kingdom, comprising 650 constituencies, as determined by the ONS, was 47,558,398 on 2 March 2020. The electorate of the five protected constituencies – Isle of Wight (two seats), Na h-Eileanan an Iar, Orkney and Shetland, and Ynys Môn – amounted to 220,132, leaving 47,338,266 to be distributed between the remaining 645 constituencies, which gave an electoral quota of 73,393. Each non-protected constituency must have an electorate which is within 5% of this quota, which gave a permitted range of 69,724 to 77,062.[8] In Northern Ireland the legislation allows for a wider range, in certain prescribed circumstances, from 68,313 to 77,062.[11]

Distribution of seats[edit]

United Kingdom[edit]

The 650 constituencies were allocated between the four nations of the UK in accordance with the method of allocation specified by the legislation as shown in the table below.[13]

Nation Current seats
Unprotected seats Protected seats Total
Electorate Allocation Average size Electorate Allocation Electorate Allocation Change
England 533 39,748,705 541 73,473 111,716 2 39,860,421 543 +10
Northern Ireland 18 1,295,688 18 71,983 1,295,688 18
Scotland 59 4,023,611 55 73,320 56,001 2 4,079,612 57 −2
Wales 40 2,270,262 31 73,234 52,415 1 2,322,677 32 −8
Total 650 47,338,266 645 73,393 220,132 5 47,558,398 650

Regions of England[edit]

The Commission for England applied the same distribution formula to the English allocation, which results in the following redistribution of constituencies among the English regions:[13]

Region Current seats
Electorate Allocation Change Average size
East Midlands 46 3,481,126 47 +1 74,067
Eastern 58 4,482,127 61 +3 73,477
London 73 5,550,454 75 +2 74,006
North East 29 1,952,999 27 −2 72,333
North West 75 5,381,549 73 −2 73,720
South East * 83 6,522,802 89 +6 73,290
South West 55 4,242,136 58 +3 73,140
West Midlands 59 4,169,012 57 −2 73,141
Yorkshire and the Humber 54 3,966,500 54 73,454
Unprotected seats 532 39,748,705 541 +9 73,428
Isle of Wight 1 111,716 2 +1 55,858
Total 533 39,860,421 543 +10 73,408

* Excluding Isle of Wight

Final proposals[edit]

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All four Commissions submitted their Final Recommendations Reports to the Speaker of the House of Commons on 27 June 2023. These were immediately laid before Parliament and the reports were published on the respective Commissions’ websites on 28 June 2023.[14] [15] [16] [17]


The final recommendations for England resulted in only 55 of the existing 533 constituencies remaining completely unchanged.[18]

Regional summary
Region Total
Unchanged Sub-regions
East Midlands[19] 47 (+1) 7 Derbyshire
Leicestershire, Lincolnshire and Rutland (+1)
Eastern[20] 61 (+3) 3 Bedfordshire and Hertfordshire (+1)
Cambridgeshire (+1)

Norfolk and Suffolk (+1)

London[21] 75 (+2) 3 North East London
Newham and Tower Hamlets (+1)
North Central London

North West London
South West London
South Central London (+1)
South East London

North East[22] 27 (−2) 2 North of Tyne (−1)
North East (−1)
Tees Valley
North West[23] 73 (−2) 12 Cheshire and Merseyside
Cumbria and Lancashire (−2)
Greater Manchester
South East[24] 91 (+7) 14 Berkshire, Hampshire, and Surrey (+2)
Buckinghamshire (+1)
East Sussex and West Sussex (+1)
Isle of Wight (+1)
Kent (+1)
Oxfordshire (+1)
South West[25] 58 (+3) 2 Avon, Somerset, and Devon (+2)
Gloucestershire and Wiltshire (+1)
West Midlands[26] 57 (−2) 8 Birmingham and Solihull

Staffordshire and the Black Country (−2)

Yorkshire and the Humber[27] 54 (–) 4 Humberside and South Yorkshire (−1)
North Yorkshire and West Yorkshire (+1)
Total 543 55

In Wales, 21 of the 32 seats were unaltered from the revised proposals; 10 had revised boundaries (of which five were renamed); and one had a name change only.[17] In Scotland boundary changes affected 18 seats, of which 12 were renamed. Only name changes affected a further six, leaving 33 unaltered. In Northern Ireland, minor boundary changes affected five seats, with no changes to the proposed names.

Northern Ireland[edit]

As the number of constituencies in Northern Ireland remains the same, changes were only necessary to bring some of the electorates within the permitted range and align boundaries with those of revised local government wards. Belfast South was enlarged into the countryside and renamed Belfast South and Mid Down. East Antrim was extended further west, while Fermanagh-South Tyrone was extended further east into County Armagh.[15]

Demographic changes from new boundaries[edit]

This table describes how the demographics of each constituency are different under the new boundaries compared to the old boundaries.[28] The population disparity between constituencies exists because boundaries are drawn based on electorate size, not total population.

Constituency Catholic Protestant No religion Other religion Total population
Old lines New lines Old lines New lines Old lines New lines Old lines New lines Old lines New lines
Belfast East 10,679 (11.01%) 13,111 (12.82%) 51,872 (53.85%) 52,964 (51.79%) 31,792 (33.01%) 33,851 (33.10%) 1,981 (2.06%) 2,349 (2.30%) 96,324 102,275
Belfast North 46,485 (42.45%) 47,822 (44.91%) 37,090 (33.87%) 33,686 (31.63%) 23,615 (21.56%) 22,712 (21.33%) 2,317 (2.12%) 2,269 (2.13%) 109,507 106,489
Belfast South and Mid Down 44,768 (38.16%) 44,328 (37.08%) 32,208 (27.45%) 34,829 (29.13%) 34,845 (29.70%) 34,928 (29.22%) 5,499 (4.69%) 5,465 (4.57%) 117,320 119,950
Belfast West 69,641 (74.38%) 71,640 (69.43%) 11,738 (12.54%) 17,426 (16.89%) 10,606 (11.33%) 12,446 (12.06%) 1,642 (1.75%) 1,665 (1.61%) 93,627 103,177
East Antrim 15,709 (17.55%) 17,065 (17.60%) 48,378 (54.06%) 53,436 (55.11%) 24,428 (27.30%) 25,458 (26.26%) 977 (1.09%) 995 (1.03%) 89,492 96,954
East Londonderry 39,144 (39.26%) 41,106 (39.80%) 43,277 (43.40%) 44,461 (43.05%) 16,548 (16.42%) 16,962 (16.60%) 745 (0.75%) 756 (0.73%) 99,714 103,285
Fermanagh and South Tyrone 60,742 (55.62%) 64,271 (57.49%) 35,406 (32.42%) 34,501 (30.86%) 12,087 (11.07%) 12,021 (10.75%) 973 (0.89%) 997 (0.89%) 109,208 111,790
Foyle 72,966 (70.40%) 69,411 (71.33%) 18,332 (17.69%) 16,241 (16.69%) 11,279 (10.88%) 10,620 (10.91%) 1,075 (1.04%) 1,033 (1.06%) 103,652 97,305
Lagan Valley 22,185 (19.68%) 23,802 (21.25%) 60,598 (53.77%) 59,416 (53.05%) 28,239 (25.06%) 27,255 (24.33%) 1,685 (1.50%) 1,537 (1.37%) 112,707 112,010
Mid Ulster 69,196 (65.10%) 66,568 (63.26%) 27,466 (25.84%) 28,847 (27.41%) 9,063 (8.53%) 9,245 (8.79%) 560 (0.53%) 570 (0.54%) 106,285 105,230
Newry and Armagh 77,515 (62.99%) 71,766 (64.22%) 31,766 (25.81%) 27,189 (24.33%) 12,822 (10.42%) 11,881 (10.63%) 950 (0.77%) 911 (0.82%) 123,053 111,747
North Antrim 29,679 (26.44%) 28,245 (27.20%) 61,784 (55.04%) 56,171 (54.10%) 12,822 (17.86%) 11,881 (18.01%) 950 (0.67%) 911 (0.69%) 112,262 103,831
North Down 9,959 (10.69%) 10,352 (10.57%) 49,817 (55.04%) 52,671 (54.10%) 32,184 (17.86%) 33,627 (18.01%) 1,210 (0.67%) 1,248 (0.69%) 93,170 97,898
South Antrim 32,530 (30.58%) 31,490 (29.58%) 48,559 (45.64%) 49,475 (46.48%) 24,078 (22.63%) 24,286 (22.82%) 1,123 (1.12%) 1,190 (1.15%) 106,390 106,441
South Down 74,536 (65.22%) 68,036 (64.65%) 25,242 (22.09%) 24,284 (23.07%) 13,780 (12.06%) 12,249 (11.64%) 727 (0.64%) 672 (0.64%) 114,285 105,241
Strangford 14,195 (15.15%) 20,494 (20.88%) 52,951 (56.53%) 51,089 (52.05%) 25,555 (27.28%) 25,622 (26.10%) 967 (1.03%) 949 (0.97%) 93,668 98,154
Upper Bann 54,172 (41.82%) 50,007 (40.98%) 50,581 (39.05%) 48,722 (39.92%) 23,069 (17.81%) 21,686 (17.77%) 1,699 (1.31%) 1,624 (1.33%) 129,521 122,039
West Tyrone 61,050 (65.65%) 65,634 (65.80%) 23,929 (25.73%) 25,585 (25.65%) 7,470 (8.03%) 7,961 (7.98%) 541 (0.58%) 573 (0.57%) 92,990 99,753


The following table details the proposed changes, based on the commission’s final report.[16]

Regional summary
Grouping of council areas Number of constituencies Number unchanged
Aberdeen City 2 (–) 0
Aberdeenshire, Argyll and Bute, Highland, and Moray 7 (−1) 1
Angus, Clackmannanshire, Dundee City, Falkirk, Fife, Perth and Kinross, Stirling, and West Lothian 13 (–) 0
Dumfries and Galloway, East Dunbartonshire, North Lanarkshire, Scottish Borders, South Lanarkshire, and West Dunbartonshire 12 (–) 1
City of Edinburgh, East Lothian, and Midlothian 7 (–) 1
East Ayrshire, North Ayrshire, and South Ayrshire 4 (–) 4
East Renfrewshire 1 (–) 1
Glasgow City, Inverclyde, and Renfrewshire 9 (−1) 0
Na h-Eileanan an Iar, Orkney Islands and Shetland Islands 2 (protected) 2


The final recommendations on the new constituencies in Wales were published on 28 June 2023 by the Boundary Commission for Wales.[29][30] This followed years of proposals and consultations since 2021, with initial proposals published in 2021[31] and revised in 2022.[32]

Legend – .mw-parser-output .tooltip-dotted{border-bottom:1px dotted;cursor:help}New constituency; expanded constituency; redefined constituency; revived constituency

Recommended constituency Electoral wards from constituency Status
Aberafan Maesteg Bridgend (part), Ogmore (part), Aberavon (part), Neath (part) New
Alyn and Deeside Alyn and Deeside (all), Delyn (part) Expanded
Bangor Aberconwy Aberconwy (all), Clwyd West (part), Arfon (part) New
Blaenau Gwent and Rhymney Blaenau Gwent (all), Merthyr Tydfil and Rhymney (part), Islwyn (part), Caerphilly (part) New
Brecon, Radnor and Cwm Tawe Brecon and Radnorshire (all), Neath (part) New
Bridgend Bridgend (part), Ogmore (part) Redefined
Caerfyrddin Carmarthen East and Dinefwr (part), Carmarthen West and South Pembrokeshire (part) Revived
Caerphilly Caerphilly (part), Islwyn (part) Redefined
Cardiff East Cardiff Central (part), Cardiff South and Penarth (part) Revived
Cardiff North Cardiff North (all), Pontypridd (part) Expanded
Cardiff South and Penarth Cardiff South and Penarth (part), Cardiff Central (part), Vale of Glamorgan (part) Redefined
Cardiff West Cardiff West (all), Pontypridd (part) Expanded
Ceredigion Preseli Ceredigion (all), Preseli Pembrokeshire (part) New
Clwyd East Clwyd West (part), Clwyd South (part), Vale of Clwyd (part), Delyn (part) New
Clwyd North Clwyd West (part), Vale of Clwyd (part) New
Dwyfor Meirionnydd Clwyd South (part), Dwyfor Meirionnydd (all), Arfon (part) Expanded
Gower Gower (part), Swansea West (part) Redefined
Llanelli Llanelli (all), Carmarthen East and Dinefwr (part) Expanded
Merthyr Tydfil and Aberdare Merthyr Tydfil and Rhymney (part), Cynon Valley (part) New
Mid and South Pembrokeshire Preseli Pembrokeshire (part), Carmarthen West and South Pembrokeshire (part) New
Monmouthshire Monmouth (part), Newport East (part) Revived
Montgomeryshire and Glyndŵr Montgomeryshire (all), Clwyd South (part) New
Neath and Swansea East Aberavon (part), Neath (part), Gower (part), Swansea East (part) New
Newport East Newport East (part), Newport West (part) Redefined
Newport West and Islwyn Newport West (part), Islwyn (part) New
Pontypridd Cynon Valley (part), Ogmore (part), Pontypridd (part) Redefined
Rhondda and Ogmore Ogmore (part), Pontypridd (part), Rhondda (all) New
Swansea West Swansea East (part), Swansea West (part) Redefined
Torfaen Torfaen (all), Monmouth (part) Expanded
Vale of Glamorgan Vale of Glamorgan (part) Redefined
Wrexham Clwyd South (part), Wrexham (all) Expanded
Ynys Môn Ynys Môn (all) Protected constituency

Political impact[edit]

According to analysis carried out by electoral modelling consultancy Electoral Calculus, a total of 24 constituencies would disappear (i.e. be broken up and not form the larger part of any proposed seats), offset by 24 wholly new constituencies (proposed seats which do not contain the larger part of any pre-existing seat). If the 2019 general election was re-run under the boundaries in the final proposals, it was estimated that a further 15 seats would change hands. The overall effect would be a net gain of 11 seats for the Conservatives, a net loss of 6 for Labour, a loss of 3 for the Liberal Democrats and 2 for Plaid Cymru.[33] This was further analysed as follows:

Party New seats Abolished
Seats changing hands Total
Gain Loss
Conservative +19 −11 +8 −5 +11
Labour +5 −10 +4 −5 −6
Liberal Democrat −3 −3
Scottish National −2 +3 −1 0
Plaid Cymru −1 −1 −2
Total +24 −24 +15 −15

In January 2024, professors Colin Rallings and Michael Thrasher published detailed estimates of what the result would have been had the new boundaries been in place at the previous general election. This analysis shows the Conservatives would have won seven additional seats in 2019, with Labour losing two, the Liberal Democrats three and Plaid Cymru two.[34]

New and abolished constituencies[edit]

In total, there are 211 newly named constituencies, with the same number of seat names no longer being used (comprising just under one third of the total of 650). These constituencies are listed alphabetically below. Note that a constituency name remaining the same or changing does not necessarily correlate with how much the seat’s boundaries change, or whether the constituency would be seen as a “new constituency”. For example, the pre-2023 Burton changes name to become the post-2023 Burton and Uttoxeter, but its boundaries remain identical; on the other hand, the constituency name Newcastle upon Tyne North remains the same after the review, but the majority of the post-review constituency covers different territory to the pre-review constituency, with only 43% of the pre-2023 Newcastle upon Tyne North remaining in the new seat after the review.

New constituency names[edit]

Following the publication of the final recommendations, these are the new or re-established names of constituencies which will be fought at the next general election:

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Abolished constituency names[edit]

The following constituency names will no longer exist at the next general election:

Disappearing and newly created seats[edit]

Most of the new seats listed above are the result of name changes to existing constituencies following boundary changes of varying degrees, including five where the boundaries are unchanged. An existing seat where no part forms the largest part of any new seat is considered to be “disappearing”. Conversely, any new seat which doesn’t contain the largest part of any existing seat is considered to be genuinely “newly created”.

The table below lists the disappearing and newly created constituencies.[35]

Region/Nation Net change Disappearing Newly created
East Midlands +1
Eastern +3
London +2
North East −2
North West −2
South East +7
South West +3
West Midlands −2
Yorkshire and the Humber 0
Scotland −2
Wales −8

Linked seats[edit]

An existing seat can be regarded as being linked to a newly named seat where part of the existing seat contributes the largest part of the newly named seat. There are a total of 187 linked constituencies, many of which involve significant changes resulting from the knock-on impact of new or abolished seats within review areas. However, some arise from the consultation process and involve only minor changes. The table below lists those constituencies with name changes, indicating the extent of the changes by reference to the proportion of the old constituency included in the new constituency, or the proportion of the new in the old, which ever is the lesser:

  • None – name change only
  • Minor – greater than 90%
  • Moderate – between 75% and 90%
  • Major – between 50% and 75%
  • Wholesale – less than 50%
Region/nation Abolished name New name Extent of change
East Midlands (9) Bosworth Hinckley and Bosworth Moderate
Charnwood Mid Leicestershire Major
Corby Corby and East Northamptonshire Moderate
Grantham and Stamford Grantham and Bourne Major
Harborough Harborough, Oadby and Wigston Minor
Nottingham North Nottingham North and Kimberley Major
Rutland and Melton Rutland and Stamford Major
Sherwood Sherwood Forest Minor
Wellingborough Wellingborough and Rushden Moderate
Eastern (11) Broadland Broadland and Fakenham Minor
Bury St Edmunds Bury St Edmunds and Stowmarket Moderate
Hitchin and Harpenden Hitchin Major
Luton South Luton South and South Bedfordshire Minor
North East Bedfordshire North Bedfordshire Moderate
Rochford and Southend East Southend East and Rochford Moderate
Saffron Walden North West Essex Moderate
South East Cambridgeshire Ely and East Cambridgeshire Major
South West Bedfordshire Dunstable and Leighton Buzzard Minor
Southend West Southend West and Leigh Moderate
Waveney Lowestoft Minor
London (21) Beckenham Beckenham and Penge Major
Bethnal Green and Bow Bethnal Green and Stepney Moderate
Brent Central Brent East Major
Brent North Brent West Moderate
Bromley and Chislehurst Bromley and Biggin Hill Major
Camberwell and Peckham Peckham Major
Croydon Central Croydon East Moderate
Croydon North Croydon West Major
Edmonton Edmonton and Winchmore Hill Major
Eltham Eltham and Chislehurst Major
Enfield Southgate Southgate and Wood Green Major
Hammersmith Hammersmith and Chiswick Major
Hampstead and Kilburn Hampstead and Highgate Major
Hornsey and Wood Green Hornsey and Friern Barnet Major
Kensington Kensington and Bayswater Moderate
Lewisham Deptford Lewisham North Moderate
Lewisham West and Penge Lewisham West and East Dulwich Wholesale
Streatham Clapham and Brixton Hill Major
Vauxhall Vauxhall and Camberwell Green Major
West Ham West Ham and Beckton Major
Westminster North Queen’s Park and Maida Vale Major
North East (12) Berwick-upon-Tweed North Northumberland Moderate
Blyth Valley Cramlington and Killingworth Wholesale
Gateshead Gateshead Central and Whickham Major
Jarrow Jarrow and Gateshead East Moderate
Middlesbrough Middlesbrough and Thornaby East Moderate
Newcastle upon Tyne Central Newcastle upon Tyne Central and West Major
Newcastle upon Tyne East Newcastle upon Tyne East and Wallsend Major
North West Durham Blaydon and Consett Wholesale
Sedgefield Newton Aycliffe and Spennymoor Major
Stockton South Stockton West Moderate
Wansbeck Blyth and Ashington Major
Washington and Sunderland West Washington and Gateshead South Moderate
North West (19) Blackley and Broughton Blackley and Middleton South Major
Blackpool North and Cleveleys Blackpool North and Fleetwood Major
Bolton South East Bolton South and Walkden Major
City of Chester Chester North and Neston Major
Copeland Whitehaven and Workington Major
Eddisbury Chester South and Eddisbury Major
Ellesmere Port and Neston Ellesmere Port and Bromborough Major
Garston and Halewood Liverpool Garston Moderate
Halton Widnes and Halewood Major
Heywood and Middleton Heywood and Middleton North Moderate
Lancaster and Fleetwood Lancaster and Wyre Major
Leigh Leigh and Atherton Moderate
Manchester Gorton Gorton and Denton Major
Oldham West and Royton Oldham West, Chadderton and Royton None
Pendle Pendle and Clitheroe Major
Salford and Eccles Salford Moderate
Weaver Vale Runcorn and Helsby Major
Workington Penrith and Solway Wholesale
Worsley and Eccles South Worsley and Eccles Major
South East (18) Brighton Kemptown Brighton Kemptown and Peacehaven Minor
Buckingham Mid Buckinghamshire Wholesale
Dover Dover and Deal Minor
Fareham Fareham and Waterlooville Major
Henley Henley and Thame Minor
Hove Hove and Portslade None
Isle of Wight Isle of Wight East Major
Maidstone and The Weald Maidstone and Malling Major
Milton Keynes South Milton Keynes Central Wholesale
Mole Valley Dorking and Horley Major
North Thanet Herne Bay and Sandwich Moderate
Reading East Reading Central Major
Reading West Reading West and Mid Berkshire Major
South Thanet East Thanet Moderate
South West Surrey Farnham and Bordon Major
Tonbridge and Malling Tonbridge Moderate
Wantage Didcot and Wantage Moderate
Wealden Sussex Weald Major
South West (14) Bridgwater and West Somerset Bridgwater Major
Bristol West Bristol Central Major
Devizes East Wiltshire Major
East Devon Exmouth and Exeter East Major
North East Somerset North East Somerset and Hanham Major
North Swindon Swindon North Moderate
South Swindon Swindon South Moderate
Somerton and Frome Glastonbury and Somerton Major
Taunton Deane Taunton and Wellington Moderate
The Cotswolds South Cotswolds Wholesale
Tiverton and Honiton Honiton and Sidmouth Major
Torridge and West Devon Torridge and Tavistock Minor
Totnes South Devon Minor
Wells Wells and Mendip Hills Major
West Midlands (18) Birmingham Hall Green Birmingham Hall Green and Moseley Minor
Birmingham Hodge Hill Birmingham Hodge Hill and Solihull North Major
Burton Burton and Uttoxeter None
Coventry North East Coventry East Moderate
Dudley North Dudley Moderate
Halesowen and Rowley Regis Halesowen Major
Ludlow South Shropshire Minor
Meriden Meriden and Solihull East Major
Mid Worcestershire Droitwich and Evesham Minor
North Warwickshire North Warwickshire and Bedworth None
Shrewsbury and Atcham Shrewsbury Minor
Solihull Solihull West and Shirley Moderate
South Staffordshire Kingswinford and South Staffordshire Major
Walsall North Walsall and Bloxwich Major
Warley Smethwick Moderate
West Bromwich East West Bromwich Major
West Bromwich West Tipton and Wednesbury Major
Wolverhampton South West Wolverhampton West Moderate
Yorkshire and the Humber (22) Barnsley Central Barnsley North Moderate
Barnsley East Barnsley South Major
Batley and Spen Spen Valley Major
Cleethorpes Brigg and Immingham Major
Dewsbury Dewsbury and Batley Major
Don Valley Doncaster East and the Isle of Axholme Major
East Yorkshire Bridlington and The Wolds Moderate
Elmet and Rothwell Wetherby and Easingwold Wholesale
Great Grimsby Great Grimsby and Cleethorpes Major
Haltemprice and Howden Goole and Pocklington Wholesale
Hemsworth Normanton and Hemsworth Moderate
Keighley Keighley and Ilkley None
Kingston upon Hull North Kingston upon Hull North and Cottingham Major
Kingston upon Hull West and Hessle Kingston upon Hull West and Haltemprice Major
Leeds Central Leeds South Major
Morley and Outwood Leeds South West and Morley Major
Normanton, Pontefract and Castleford Pontefract, Castleford and Knottingley Moderate
Pudsey Leeds West and Pudsey Wholesale
Richmond (Yorks) Richmond and Northallerton Moderate
Selby and Ainsty Selby Major
Wakefield Ossett and Denby Dale Major
Wentworth and Dearne Rawmarsh and Conisbrough Major
Northern Ireland (1) Belfast South Belfast South and Mid Down Moderate
Scotland (26) Angus Angus and Perthshire Glens Major
Argyll and Bute Argyll, Bute and South Lochaber Minor
Banff and Buchan Aberdeenshire North and Moray East Major
Coatbridge, Chryston and Bellshill Coatbridge and Bellshill Moderate
Cumbernauld, Kilsyth and Kirkintilloch East Cumbernauld and Kirkintilloch Moderate
Dundee East Arbroath and Broughty Ferry Major
Dundee West Dundee Central Moderate
East Dunbartonshire Mid Dunbartonshire Moderate
East Kilbride, Strathaven and Lesmahagow East Kilbride and Strathaven Minor
East Lothian Lothian East Moderate
Edinburgh East Edinburgh East and Musselburgh Moderate
Dunfermline and West Fife Dunfermline and Dollar Moderate
Glasgow North West Glasgow West Moderate
Glenrothes Glenrothes and Mid Fife Moderate
Gordon Gordon and Buchan Major
Inverclyde Inverclyde and Renfrewshire West Moderate
Inverness, Nairn, Badenoch and Strathspey Inverness, Skye and West Ross-shire Major
Kirkcaldy and Cowdenbeath Cowdenbeath and Kirkcaldy Moderate
Lanark and Hamilton East Hamilton and Clyde Valley Major
Linlithgow and East Falkirk Bathgate and Linlithgow Major
Moray Moray West, Nairn and Strathspey Major
Motherwell and Wishaw Motherwell, Wishaw and Carluke Moderate
Ochil and South Perthshire Alloa and Grangemouth Wholesale
Perth and North Perthshire Perth and Kinross-shire Major
Rutherglen and Hamilton West Rutherglen Major
Stirling Stirling and Strathallan Minor
Wales (16) Aberavon Aberafan Maesteg Major
Aberconwy Bangor Aberconwy Major
Blaenau Gwent Blaenau Gwent and Rhymney Major
Brecon and Radnorshire Brecon, Radnor and Cwm Tawe Moderate
Cardiff Central Cardiff East Major
Carmarthen East and Dinefwr Caerfyrddin Major
Ceredigion Ceredigion Preseli Moderate
Clwyd West Clwyd North Major
Delyn Clwyd East Major
Islwyn Newport West and Islwyn Major
Merthyr Tydfil and Rhymney Merthyr Tydfil and Aberdare Major
Monmouth Monmouthshire Moderate
Montgomeryshire Montgomeryshire and Glyndŵr Major
Neath Neath and Swansea East Major
Preseli Pembrokeshire Mid and South Pembrokeshire Major
Rhondda Rhondda and Ogmore Major


  • Electoral Calculus – New Constituency Boundaries for 2023[36]
  • House of Commons Library – Boundary review 2023: Which seats will change in the UK?[37]

Retained seats with major changes[edit]

The list below indicates those constituencies which have retained their names, but where boundary changes have resulted in major changes – where the proportion of the existing electorate included in the redefined constituency or vice versa, which ever is the lesser, is less than 75%.

See also[edit]


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  1. ^ .mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:”””””””‘””‘”}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url(“//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg”)right 0.1em center/9px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a{background-size:contain}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url(“//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg”)right 0.1em center/9px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a{background-size:contain}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url(“//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg”)right 0.1em center/9px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a{background-size:contain}.mw-parser-output .cs1-ws-icon a{background:url(“//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg”)right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:#d33}.mw-parser-output .cs1-visible-error{color:#d33}.mw-parser-output .cs1-maint{display:none;color:#2C882D;margin-left:0.3em}.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911F}html.skin-theme-clientpref-night .mw-parser-output .cs1-visible-error,html.skin-theme-clientpref-night .mw-parser-output .cs1-hidden-error{color:#f8a397}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-visible-error,html.skin-theme-clientpref-os .mw-parser-output .cs1-hidden-error{color:#f8a397}html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911F}}“The Parliamentary Constituencies Order 2023”. Boundary Commission for England. 20 November 2023. Retrieved 29 March 2024.
  2. ^ “The Parliamentary Constituencies Order 2023”. legislation.gov.uk. The National Archives. 29 November 2023. Retrieved 29 March 2024.
  3. ^ a b “Parliamentary Constituencies Act 2020”. Archived from the original on 6 August 2021.
  4. ^ a b c “CM 8109 Individual Electoral Registration Impact Assessment Presented to Parliament by the Deputy Prime Minister by Command of Her Majesty June 2011” (PDF). publishing.service.gov.uk. Cabinet Office (UK). Retrieved 19 March 2024.
  5. ^ “Constituency boundaries – the reform behind the review”. 11 September 2023.
  6. ^ “Defence Secretary Ben Wallace to lose seat in Commons boundary changes”. BBC News. 28 June 2023. Retrieved 5 July 2023.
  7. ^ Privy Council List of Business – 15 November 2023 https://privycouncil.independent.gov.uk/wp-content/uploads/2023/11/2023-11-15-List-of-Business.pdf
  8. ^ a b “2023 Review launched”. Boundary Commission for England. Retrieved 7 January 2021.
  9. ^ “2023 Review of UK Parliament Constituencies”. Boundary Commission for Scotland. Retrieved 7 January 2021.
  10. ^ “2023 Review”. Boundary Commission for Wales. Retrieved 7 January 2021.
  11. ^ a b “2023 Review: Electoral Quota and Allocation of Constituencies Announced”. Boundary Commission for Northern Ireland. 5 January 2021. Retrieved 7 January 2021.
  12. ^ “Electoral statistics, UK”. Office for National Statistics. Retrieved 7 January 2021.
  13. ^ a b “2023 Review”. Boundary Commission for England. Retrieved 8 January 2021.
  14. ^ “Boundary Commission for England publishes final recommendations for new Parliamentary constituencies | Boundary Commission for England”. boundarycommissionforengland.independent.gov.uk. Retrieved 5 July 2023.
  15. ^ a b “Boundary Commission for Northern Ireland Publishes Final Recommendations Report of the 2023 Review of Parliamentary Constituencies”. Boundary Commission for Northern Ireland. 28 June 2023. Retrieved 5 July 2023.
  16. ^ a b “28 June 2023 – 2023 Review Report laid before Parliament | The Boundary Commission for Scotland”. www.bcomm-scotland.independent.gov.uk. Retrieved 5 July 2023.
  17. ^ a b “Wales’ new parliamentary constituencies published | BComm Wales”. bcomm-wales.gov.uk. Retrieved 5 July 2023.
  18. ^ “The 2023 Review of Parliamentary Constituency Boundaries in England – Volume one: Report | Boundary Commission for England”. boundarycommissionforengland.independent.gov.uk. para 70. Retrieved 12 July 2023.
  19. ^ “The 2023 Review of Parliamentary Constituency Boundaries in England – Volume one: Report – East Midlands | Boundary Commission for England”. boundarycommissionforengland.independent.gov.uk. Retrieved 8 December 2023.
  20. ^ “The 2023 Review of Parliamentary Constituency Boundaries in England – Volume one: Report – Eastern | Boundary Commission for England”. boundarycommissionforengland.independent.gov.uk. Retrieved 8 December 2023.
  21. ^ “The 2023 Review of Parliamentary Constituency Boundaries in England – Volume one: Report – London | Boundary Commission for England”. boundarycommissionforengland.independent.gov.uk. Retrieved 8 December 2023.
  22. ^ “The 2023 Review of Parliamentary Constituency Boundaries in England – Volume one: Report – North East | Boundary Commission for England”. boundarycommissionforengland.independent.gov.uk. Retrieved 8 December 2023.
  23. ^ “The 2023 Review of Parliamentary Constituency Boundaries in England – Volume one: Report – North West | Boundary Commission for England”. boundarycommissionforengland.independent.gov.uk. Retrieved 8 December 2023.
  24. ^ “The 2023 Review of Parliamentary Constituency Boundaries in England – Volume one: Report – South East | Boundary Commission for England”. boundarycommissionforengland.independent.gov.uk. Retrieved 8 December 2023.
  25. ^ “The 2023 Review of Parliamentary Constituency Boundaries in England – Volume one: Report – South West | Boundary Commission for England”. boundarycommissionforengland.independent.gov.uk. Retrieved 8 December 2023.
  26. ^ “The 2023 Review of Parliamentary Constituency Boundaries in England – Volume one: Report – West Midlands | Boundary Commission for England”. boundarycommissionforengland.independent.gov.uk. Retrieved 8 December 2023.
  27. ^ “The 2023 Review of Parliamentary Constituency Boundaries in England – Volume one: Report – Yorkshire and the Humber | Boundary Commission for England”. boundarycommissionforengland.independent.gov.uk. Retrieved 8 December 2023.
  28. ^ “FLEXIBLE TABLE BUILDER”. NISRA. Retrieved 16 November 2023.
  29. ^ “Wales’ new parliamentary constituencies published | BComm Wales”. bcomm-wales.gov.uk. Retrieved 28 June 2023.
  30. ^ 2023 Review of Parliamentary Constituencies – The 2023 Review of Parliamentary Constituencies in Wales (PDF). Boundary Commission for Wales. 28 June 2023.
  31. ^ “Major changes to cut number of Welsh MPs published”. BBC News. 8 September 2021. Retrieved 8 September 2021.
  32. ^ “Revised Proposals” (PDF). Boundary Commission for Wales. pp. 24–25, 30.
  33. ^ “New Constituency Boundaries for 2023”. www.electoralcalculus.co.uk. Retrieved 8 December 2023.
  34. ^ “General election: Labour would need record swing to win”. BBC News. 16 January 2024. Retrieved 19 January 2024.
  35. ^ “New Constituency Boundaries for 2023”. www.electoralcalculus.co.uk. Retrieved 12 July 2023.
  36. ^ “New Constituency Boundaries for 2023”. www.electoralcalculus.co.uk. Retrieved 24 July 2023.
  37. ^ Baker, Carl; Uberoi, Elise; Johnston, Neil (13 July 2023). “Boundary review 2023: which seats will change in the UK?”. House of Commons Library. Retrieved 24 July 2023.

External links[edit]


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