United Kingdom Parliament constituencies
The Parliament of the United Kingdom currently has 650 parliamentary constituencies across the constituent countries, each electing a single member of parliament to the House of Commons by the plurality voting system, ordinarily every five years. Voting last took place in all 650 of those constituencies at the United Kingdom general election on 12 December 2019, and these results have been counted and verified.
The number of seats rose from 646 to 650 at the 2005 general election after proposals made by the boundary commissions for England, Wales and Northern Ireland were adopted through statutory instruments. Constituencies in Scotland remained unchanged, as the Boundary Commission for Scotland had completed a review just before the 2005 general election.
Primary legislation provides for the independence of the boundary commissions for each of the four parts of the UK; the number of seats for each of the countries; permissible factors to use in departing from any old boundaries; and a strong duty to consult. For the 2013 review this was primarily the Parliamentary Voting System and Constituencies Act 2011. The Sainte-Laguë formula method is used to form groups of seats split between the four parts of the United Kingdom and the English Regions.
The electorate figures given in the second column of the tables below are those as of 2019.
Parliamentary constituencies in the United Kingdom
The "Region" of the table refers to the NUTS 1 statistical region of England, which coincides with the former European Parliament constituency that the constituency was situated in until 31 January 2020.England
| Constituency | Electorate 2019 | Ceremonial county | Region |
| Aldershot | 72,617 | Hampshire | South East |
| Aldridge-Brownhills | 60,138 | West Midlands | West Midlands |
| Altrincham and Sale West | 73,107 | Greater Manchester | North West |
| Amber Valley | 69,976 | Derbyshire | East Midlands |
| Arundel and South Downs | 81,726 | West Sussex | South East |
| Ashfield | 78,204 | Nottinghamshire | East Midlands |
| Ashford | 89,553 | Kent | South East |
| Ashton-under-Lyne | 67,978 | Greater Manchester | North West |
| Aylesbury | 86,665 | Buckinghamshire | South East |
| Banbury | 90,116 | Oxfordshire | South East |
| Barking | 77,953 | London | London |
| Barnsley Central | 65,277 | South Yorkshire | Yorkshire & the Humber |
| Barnsley East | 69,504 | South Yorkshire | Yorkshire & the Humber |
| Barrow and Furness | 70,158 | Cumbria | North West |
| Basildon and Billericay | 69,906 | Essex | Eastern |
| Basingstoke | 82,928 | Hampshire | South East |
| Bassetlaw | 80,024 | Nottinghamshire | East Midlands |
| Bath | 67,805 | Somerset | South West |
| Batley and Spen | 79,558 | West Yorkshire | Yorkshire & the Humber |
| Battersea | 79,350 | London | London |
| Beaconsfield | 77,720 | Buckinghamshire | South East |
| Beckenham | 68,662 | London | London |
| Bedford | 71,581 | Bedfordshire | Eastern |
| Bermondsey and Old Southwark | 93,248 | London | London |
| Berwick-upon-Tweed | 59,939 | Northumberland | North East |
| Bethnal Green and Bow | 88,262 | London | London |
| Beverley and Holderness | 79,696 | East Riding of Yorkshire | Yorkshire & the Humber |
| Bexhill and Battle | 81,963 | East Sussex | South East |
| Bexleyheath and Crayford | 65,466 | London | London |
| Birkenhead | 63,762 | Merseyside | North West |
| Birmingham, Edgbaston | 68,828 | West Midlands | West Midlands |
| Birmingham, Erdington | 66,148 | West Midlands | West Midlands |
| Birmingham, Hall Green | 80,283 | West Midlands | West Midlands |
| Birmingham, Hodge Hill | 78,295 | West Midlands | West Midlands |
| Birmingham, Ladywood | 74,912 | West Midlands | West Midlands |
| Birmingham, Northfield | 73,694 | West Midlands | West Midlands |
| Birmingham, Perry Barr | 72,006 | West Midlands | West Midlands |
| Birmingham, Selly Oak | 82,665 | West Midlands | West Midlands |
| Birmingham, Yardley | 74,704 | West Midlands | West Midlands |
| Bishop Auckland | 68,170 | County Durham | North East |
| Blackburn | 71,234 | Lancashire | North West |
| Blackley and Broughton | 73,372 | Greater Manchester | North West |
| Blackpool North and Cleveleys | 63,692 | Lancashire | North West |
| Blackpool South | 57,690 | Lancashire | North West |
| Blaydon | 67,853 | Tyne and Wear | North East |
| Blyth Valley | 64,429 | Northumberland | North East |
| Bognor Regis and Littlehampton | 77,446 | West Sussex | South East |
| Bolsover | 75,161 | Derbyshire | East Midlands |
| Bolton North East | 67,564 | Greater Manchester | North West |
| Bolton South East | 69,163 | Greater Manchester | North West |
| Bolton West | 73,191 | Greater Manchester | North West |
| Bootle | 74,832 | Merseyside | North West |
| Boston and Skegness | 69,381 | Lincolnshire | East Midlands |
| Bosworth | 81,542 | Leicestershire | East Midlands |
| Bournemouth East | 74,125 | Dorset | South West |
| Bournemouth West | 74,205 | Dorset | South West |
| Bracknell | 78,978 | Berkshire | South East |
| Bradford East | 73,206 | West Yorkshire | Yorkshire & the Humber |
| Bradford South | 69,046 | West Yorkshire | Yorkshire & the Humber |
| Bradford West | 70,694 | West Yorkshire | Yorkshire & the Humber |
| Braintree | 75,208 | Essex | Eastern |
| Brent Central | 84,032 | London | London |
| Brent North | 83,788 | London | London |
| Brentford and Isleworth | 85,775 | London | London |
| Brentwood and Ongar | 75,255 | Essex | Eastern |
| Bridgwater and West Somerset | 85,327 | Somerset | South West |
| Brigg and Goole | 65,939 | East Riding of Yorkshire and Lincolnshire | Yorkshire & the Humber |
| Brighton, Kemptown | 69,833 | East Sussex | South East |
| Brighton, Pavilion | 79,057 | East Sussex | South East |
| Bristol East | 73,867 | Bristol | South West |
| Bristol North West | 76,273 | Bristol | South West |
| Bristol South | 84,079 | Bristol | South West |
| Bristol West | 99,253 | Bristol | South West |
| Broadland | 78,151 | Norfolk | Eastern |
| Bromley and Chislehurst | 66,697 | London | London |
| Bromsgrove | 75,078 | Worcestershire | West Midlands |
| Broxbourne | 73,182 | Hertfordshire | Eastern |
| Broxtowe | 73,052 | Nottinghamshire | East Midlands |
| Buckingham | 83,146 | Buckinghamshire | South East |
| Burnley | 64,345 | Lancashire | North West |
| Burton | 75,036 | Staffordshire | West Midlands |
| Bury North | 68,802 | Greater Manchester | North West |
| Bury South | 75,152 | Greater Manchester | North West |
| Bury St Edmunds | 89,644 | Suffolk | Eastern |
| Calder Valley | 79,287 | West Yorkshire | Yorkshire & the Humber |
| Camberwell and Peckham | 88,971 | London | London |
| Camborne and Redruth | 70,250 | Cornwall | South West |
| Cambridge | 79,951 | Cambridgeshire | Eastern |
| Cannock Chase | 74,813 | Staffordshire | West Midlands |
| Canterbury | 80,203 | Kent | South East |
| Carlisle | 65,105 | Cumbria | North West |
| Carshalton and Wallington | 72,941 | London | London |
| Castle Point | 69,608 | Essex | Eastern |
| Central Devon | 74,926 | Devon | South West |
| Central Suffolk and North Ipswich | 80,037 | Suffolk | Eastern |
| Charnwood | 79,534 | Leicestershire | East Midlands |
| Chatham and Aylesford | 71,642 | Kent | South East |
| Cheadle | 74,577 | Greater Manchester | North West |
| Chelmsford | 80,394 | Essex | Eastern |
| Chelsea and Fulham | 67,110 | London | London |
| Cheltenham | 81,044 | Gloucestershire | South West |
| Chesham and Amersham | 72,542 | Buckinghamshire | South East |
| Chesterfield | 71,034 | Derbyshire | East Midlands |
| Chichester | 85,499 | West Sussex | South East |
| Chingford and Woodford Green | 65,393 | London | London |
| Chippenham | 77,221 | Wiltshire | South West |
| Chipping Barnet | 79,960 | London | London |
| Chorley | 78,177 | Lancashire | North West |
| Christchurch | 71,520 | Dorset | South West |
| Cities of London and Westminster | 63,700 | London | London |
| City of Chester | 76,057 | Cheshire | North West |
| City of Durham | 71,271 | County Durham | North East |
| Clacton | 70,930 | Essex | Eastern |
| Cleethorpes | 73,689 | Lincolnshire | Yorkshire & the Humber |
| Colchester | 82,625 | Essex | Eastern |
| Colne Valley | 84,174 | West Yorkshire | Yorkshire & the Humber |
| Congleton | 80,930 | Cheshire | North West |
| Copeland | 61,693 | Cumbria | North West |
| Corby | 86,153 | Northamptonshire | East Midlands |
| Coventry North East | 76,006 | West Midlands | West Midlands |
| Coventry North West | 75,247 | West Midlands | West Midlands |
| Coventry South | 70,979 | West Midlands | West Midlands |
| Crawley | 74,207 | West Sussex | South East |
| Crewe and Nantwich | 80,321 | Cheshire | North West |
| Croydon Central | 81,407 | London | London |
| Croydon North | 88,468 | London | London |
| Croydon South | 83,982 | London | London |
| Dagenham and Rainham | 71,045 | London | London |
| Darlington | 66,397 | County Durham | North East |
| Dartford | 82,209 | Kent | South East |
| Daventry | 77,423 | Northamptonshire | East Midlands |
| Denton and Reddish | 66,234 | Greater Manchester | North West |
| Derby North | 73,199 | Derbyshire | East Midlands |
| Derby South | 73,062 | Derbyshire | East Midlands |
| Derbyshire Dales | 65,080 | Derbyshire | East Midlands |
| Devizes | 73,372 | Wiltshire | South West |
| Dewsbury | 81,253 | West Yorkshire | Yorkshire & the Humber |
| Don Valley | 75,356 | South Yorkshire | Yorkshire & the Humber |
| Doncaster Central | 71,389 | South Yorkshire | Yorkshire & the Humber |
| Doncaster North | 72,362 | South Yorkshire | Yorkshire & the Humber |
| Dover | 76,355 | Kent | South East |
| Dudley North | 61,936 | West Midlands | West Midlands |
| Dudley South | 60,731 | West Midlands | West Midlands |
| Dulwich and West Norwood | 80,331 | London | London |
| Ealing Central and Acton | 75,510 | London | London |
| Ealing North | 74,473 | London | London |
| Ealing, Southall | 64,581 | London | London |
| Easington | 61,182 | County Durham | North East |
| East Devon | 87,168 | Devon | South West |
| East Ham | 88,319 | London | London |
| East Hampshire | 76,478 | Hampshire | South East |
| East Surrey | 83,148 | Surrey | South East |
| East Worthing and Shoreham | 75,194 | West Sussex | South East |
| East Yorkshire | 80,923 | East Riding of Yorkshire | Yorkshire & the Humber |
| Eastbourne | 79,307 | East Sussex | South East |
| Eastleigh | 83,880 | Hampshire | South East |
| Eddisbury | 73,700 | Cheshire | North West |
| Edmonton | 65,747 | London | London |
| Ellesmere Port and Neston | 70,327 | Cheshire | North West |
| Elmet and Rothwell | 80,957 | West Yorkshire | Yorkshire & the Humber |
| Eltham | 64,086 | London | London |
| Enfield North | 68,301 | London | London |
| Enfield, Southgate | 65,525 | London | London |
| Epping Forest | 74,304 | Essex | Eastern |
| Epsom and Ewell | 81,138 | Surrey | South East |
| Erewash | 72,523 | Derbyshire | East Midlands |
| Erith and Thamesmead | 65,399 | London | London |
| Esher and Walton | 81,184 | Surrey | South East |
| Exeter | 82,054 | Devon | South West |
| Fareham | 78,337 | Hampshire | South East |
| Faversham and Mid Kent | 73,403 | Kent | South East |
| Feltham and Heston | 80,934 | London | London |
| Filton and Bradley Stoke | 74,016 | Gloucestershire | South West |
| Finchley and Golders Green | 77,573 | London | London |
| Folkestone and Hythe | 88,272 | Kent | South East |
| Forest of Dean | 71,438 | Gloucestershire | South West |
| Fylde | 66,847 | Lancashire | North West |
| Gainsborough | 76,343 | Lincolnshire | East Midlands |
| Garston and Halewood | 76,116 | Merseyside | North West |
| Gateshead | 64,449 | Tyne and Wear | North East |
| Gedling | 71,366 | Nottinghamshire | East Midlands |
| Gillingham and Rainham | 73,549 | Kent | South East |
| Gloucester | 81,319 | Gloucestershire | South West |
| Gosport | 73,541 | Hampshire | South East |
| Grantham and Stamford | 81,502 | Lincolnshire | East Midlands |
| Gravesham | 73,242 | Kent | South East |
| Great Grimsby | 61,409 | Lincolnshire | Yorkshire & the Humber |
| Great Yarmouth | 71,957 | Norfolk | Eastern |
| Greenwich and Woolwich | 79,997 | London | London |
| Guildford | 77,729 | Surrey | South East |
| Hackney North and Stoke Newington | 92,462 | London | London |
| Hackney South and Shoreditch | 89,387 | London | London |
| Halesowen and Rowley Regis | 68,300 | West Midlands | West Midlands |
| Halifax | 71,887 | West Yorkshire | Yorkshire & the Humber |
| Haltemprice and Howden | 71,083 | East Riding of Yorkshire | Yorkshire & the Humber |
| Halton | 71,930 | Cheshire | North West |
| Hammersmith | 74,759 | London | London |
| Harborough | 80,151 | Leicestershire | East Midlands |
| Harlow | 68,078 | Essex | Eastern |
| Harrogate and Knaresborough | 77,941 | North Yorkshire | Yorkshire & the Humber |
| Harrow East | 72,106 | London | London |
| Harrow West | 72,464 | London | London |
| Hartlepool | 70,855 | County Durham | North East |
| Harwich and North Essex | 74,153 | Essex | Eastern |
| Hastings and Rye | 80,524 | East Sussex | South East |
| Havant | 72,103 | Hampshire | South East |
| Hayes and Harlington | 72,357 | London | London |
| Hazel Grove | 63,346 | Greater Manchester | North West |
| Hemel Hempstead | 74,035 | Hertfordshire | Eastern |
| Hemsworth | 73,726 | West Yorkshire | Yorkshire & the Humber |
| Hendon | 82,661 | London | London |
| Henley | 76,646 | Oxfordshire | South East |
| Hereford and South Herefordshire | 72,085 | Herefordshire | West Midlands |
| Hertford and Stortford | 81,765 | Hertfordshire | Eastern |
| Hertsmere | 73,971 | Hertfordshire | Eastern |
| Hexham | 61,324 | Northumberland | North East |
| Heywood and Middleton | 80,162 | Greater Manchester | North West |
| High Peak | 74,265 | Derbyshire | East Midlands |
| Hitchin and Harpenden | 76,323 | Hertfordshire | Eastern |
| Holborn and St Pancras | 86,061 | London | London |
| Hornchurch and Upminster | 80,765 | London | London |
| Hornsey and Wood Green | 81,814 | London | London |
| Horsham | 86,730 | West Sussex | South East |
| Houghton and Sunderland South | 68,835 | Tyne and Wear | North East |
| Hove | 74,313 | East Sussex | South East |
| Huddersfield | 65,525 | West Yorkshire | Yorkshire & the Humber |
| Huntingdon | 84,657 | Cambridgeshire | Eastern |
| Hyndburn | 70,842 | Lancashire | North West |
| Ilford North | 72,973 | London | London |
| Ilford South | 84,972 | London | London |
| Ipswich | 75,525 | Suffolk | Eastern |
| Isle of Wight | 113,021 | Isle of Wight | South East |
| Islington North | 75,162 | London | London |
| Islington South and Finsbury | 70,489 | London | London |
| Jarrow | 65,103 | Tyne and Wear | North East |
| Keighley | 72,778 | West Yorkshire | Yorkshire & the Humber |
| Kenilworth and Southam | 68,154 | Warwickshire | West Midlands |
| Kensington | 64,609 | London | London |
| Kettering | 73,164 | Northamptonshire | East Midlands |
| Kingston and Surbiton | 81,975 | London | London |
| Kingston upon Hull East | 65,745 | East Riding of Yorkshire | Yorkshire & the Humber |
| Kingston upon Hull North | 65,515 | East Riding of Yorkshire | Yorkshire & the Humber |
| Kingston upon Hull West and Hessle | 60,192 | East Riding of Yorkshire | Yorkshire & the Humber |
| Kingswood | 68,972 | Gloucestershire | South West |
| Knowsley | 84,082 | Merseyside | North West |
| Lancaster and Fleetwood | 70,059 | Lancashire | North West |
| Leeds Central | 90,971 | West Yorkshire | Yorkshire & the Humber |
| Leeds East | 67,286 | West Yorkshire | Yorkshire & the Humber |
| Leeds North East | 70,580 | West Yorkshire | Yorkshire & the Humber |
| Leeds North West | 67,741 | West Yorkshire | Yorkshire & the Humber |
| Leeds West | 67,727 | West Yorkshire | Yorkshire & the Humber |
| Leicester East | 78,433 | Leicestershire | East Midlands |
| Leicester South | 77,708 | Leicestershire | East Midlands |
| Leicester West | 64,940 | Leicestershire | East Midlands |
| Leigh | 77,417 | Greater Manchester | North West |
| Lewes | 71,503 | East Sussex | South East |
| Lewisham, Deptford | 80,631 | London | London |
| Lewisham East | 67,857 | London | London |
| Lewisham West and Penge | 74,617 | London | London |
| Leyton and Wanstead | 64,852 | London | London |
| Lichfield | 76,616 | Staffordshire | West Midlands |
| Lincoln | 74,942 | Lincolnshire | East Midlands |
| Liverpool, Riverside | 80,310 | Merseyside | North West |
| Liverpool, Walton | 62,628 | Merseyside | North West |
| Liverpool, Wavertree | 63,458 | Merseyside | North West |
| Liverpool, West Derby | 65,640 | Merseyside | North West |
| Loughborough | 79,764 | Leicestershire | East Midlands |
| Louth and Horncastle | 79,634 | Lincolnshire | East Midlands |
| Ludlow | 69,444 | Shropshire | West Midlands |
| Luton North | 68,185 | Bedfordshire | Eastern |
| Luton South | 69,338 | Bedfordshire | Eastern |
| Macclesfield | 76,216 | Cheshire | North West |
| Maidenhead | 76,668 | Berkshire | South East |
| Maidstone and The Weald | 76,109 | Kent | South East |
| Makerfield | 74,190 | Greater Manchester | North West |
| Maldon | 72,438 | Essex | Eastern |
| Manchester Central | 92,247 | Greater Manchester | North West |
| Manchester, Gorton | 76,419 | Greater Manchester | North West |
| Manchester, Withington | 76,530 | Greater Manchester | North West |
| Mansfield | 77,131 | Nottinghamshire | East Midlands |
| Meon Valley | 75,737 | Hampshire | South East |
| Meriden | 85,368 | West Midlands | West Midlands |
| Mid Bedfordshire | 87,795 | Bedfordshire | Eastern |
| Mid Derbyshire | 67,442 | Derbyshire | East Midlands |
| Mid Dorset and North Poole | 65,427 | Dorset | South West |
| Mid Norfolk | 82,203 | Norfolk | Eastern |
| Mid Sussex | 85,146 | West Sussex | South East |
| Mid Worcestershire | 78,220 | Worcestershire | West Midlands |
| Middlesbrough | 60,764 | North Yorkshire | North East |
| Middlesbrough South and East Cleveland | 72,348 | North Yorkshire | North East |
| Milton Keynes North | 91,545 | Buckinghamshire | South East |
| Milton Keynes South | 96,363 | Buckinghamshire | South East |
| Mitcham and Morden | 70,021 | London | London |
| Mole Valley | 74,665 | Surrey | South East |
| Morecambe and Lunesdale | 67,397 | Lancashire | North West |
| Morley and Outwood | 78,803 | West Yorkshire | Yorkshire & the Humber |
| New Forest East | 73,549 | Hampshire | South East |
| New Forest West | 70,869 | Hampshire | South East |
| Newark | 75,850 | Nottinghamshire | East Midlands |
| Newbury | 83,414 | Berkshire | South East |
| Newcastle-under-Lyme | 57,845 | Staffordshire | West Midlands |
| Newcastle upon Tyne Central | 63,796 | Tyne and Wear | North East |
| Newcastle upon Tyne East | 68,486 | Tyne and Wear | North East |
| Newcastle upon Tyne North | 68,211 | Tyne and Wear | North East |
| Newton Abbot | 72,529 | Devon | South West |
| Normanton, Pontefract and Castleford | 84,527 | West Yorkshire | Yorkshire & the Humber |
| North Cornwall | 69,935 | Cornwall | South West |
| North Devon | 75,859 | Devon | South West |
| North Dorset | 76,765 | Dorset | South West |
| North Durham | 66,796 | County Durham | North East |
| North East Bedfordshire | 90,678 | Bedfordshire | Eastern |
| North East Cambridgeshire | 83,699 | Cambridgeshire | Eastern |
| North East Derbyshire | 72,345 | Derbyshire | East Midlands |
| North East Hampshire | 78,954 | Hampshire | South East |
| North East Hertfordshire | 76,123 | Hertfordshire | Eastern |
| North East Somerset | 73,692 | Somerset | South West |
| North Herefordshire | 70,252 | Herefordshire | West Midlands |
| North Norfolk | 70,729 | Norfolk | Eastern |
| North Shropshire | 83,258 | Shropshire | West Midlands |
| North Somerset | 80,194 | Somerset | South West |
| North Swindon | 82,441 | Wiltshire | South West |
| North Thanet | 72,756 | Kent | South East |
| North Tyneside | 78,902 | Tyne and Wear | North East |
| North Warwickshire | 70,271 | Warwickshire | West Midlands |
| North West Cambridgeshire | 94,909 | Cambridgeshire | Eastern |
| North West Durham | 72,166 | County Durham | North East |
| North West Hampshire | 83,083 | Hampshire | South East |
| North West Leicestershire | 78,935 | Leicestershire | East Midlands |
| North West Norfolk | 72,080 | Norfolk | Eastern |
| North Wiltshire | 73,280 | Wiltshire | South West |
| Northampton North | 58,768 | Northamptonshire | East Midlands |
| Northampton South | 62,163 | Northamptonshire | East Midlands |
| Norwich North | 67,172 | Norfolk | Eastern |
| Norwich South | 77,845 | Norfolk | Eastern |
| Nottingham East | 66,262 | Nottinghamshire | East Midlands |
| Nottingham North | 66,495 | Nottinghamshire | East Midlands |
| Nottingham South | 79,485 | Nottinghamshire | East Midlands |
| Nuneaton | 70,226 | Warwickshire | West Midlands |
| Old Bexley and Sidcup | 66,104 | London | London |
| Oldham East and Saddleworth | 72,120 | Greater Manchester | North West |
| Oldham West and Royton | 72,999 | Greater Manchester | North West |
| Orpington | 68,877 | London | London |
| Oxford East | 78,303 | Oxfordshire | South East |
| Oxford West and Abingdon | 76,951 | Oxfordshire | South East |
| Pendle | 65,292 | Lancashire | North West |
| Penistone and Stocksbridge | 70,925 | South Yorkshire | Yorkshire & the Humber |
| Penrith and The Border | 67,555 | Cumbria | North West |
| Peterborough | 72,560 | Cambridgeshire | Eastern |
| Plymouth, Moor View | 69,430 | Devon | South West |
| Plymouth, Sutton and Devonport | 77,852 | Devon | South West |
| Poole | 73,989 | Dorset | South West |
| Poplar and Limehouse | 91,836 | London | London |
| Portsmouth North | 71,299 | Hampshire | South East |
| Portsmouth South | 74,186 | Hampshire | South East |
| Preston | 59,672 | Lancashire | North West |
| Pudsey | 73,212 | West Yorkshire | Yorkshire & the Humber |
| Putney | 65,556 | London | London |
| Rayleigh and Wickford | 78,930 | Essex | Eastern |
| Reading East | 77,152 | Berkshire | South East |
| Reading West | 74,137 | Berkshire | South East |
| Redcar | 65,864 | North Yorkshire | North East |
| Redditch | 65,391 | Worcestershire | West Midlands |
| Reigate | 74,242 | Surrey | South East |
| Ribble Valley | 79,247 | Lancashire | North West |
| Richmond | 82,569 | North Yorkshire | Yorkshire & the Humber |
| Richmond Park | 82,699 | London | London |
| Rochdale | 78,909 | Greater Manchester | North West |
| Rochester and Strood | 82,056 | Kent | South East |
| Rochford and Southend East | 75,624 | Essex | Eastern |
| Romford | 72,350 | London | London |
| Romsey and Southampton North | 68,228 | Hampshire | South East |
| Rossendale and Darwen | 72,770 | Lancashire | North West |
| Rother Valley | 74,804 | South Yorkshire | Yorkshire & the Humber |
| Rotherham | 61,688 | South Yorkshire | Yorkshire & the Humber |
| Rugby | 72,292 | Warwickshire | West Midlands |
| Ruislip, Northwood and Pinner | 72,816 | London | London |
| Runnymede and Weybridge | 77,196 | Surrey | South East |
| Rushcliffe | 77,047 | Nottinghamshire | East Midlands |
| Rutland and Melton | 82,705 | Leicestershire and Rutland | East Midlands |
| Saffron Walden | 87,017 | Essex | Eastern |
| Salford and Eccles | 82,202 | Greater Manchester | North West |
| Salisbury | 74,556 | Wiltshire | South West |
| Scarborough and Whitby | 74,404 | North Yorkshire | Yorkshire & the Humber |
| Scunthorpe | 61,955 | Lincolnshire | Yorkshire & the Humber |
| Sedgefield | 64,325 | County Durham | North East |
| Sefton Central | 69,760 | Merseyside | North West |
| Selby and Ainsty | 78,398 | North Yorkshire | Yorkshire & the Humber |
| Sevenoaks | 71,757 | Kent | South East |
| Sheffield, Brightside and Hillsborough | 69,333 | South Yorkshire | Yorkshire & the Humber |
| Sheffield Central | 89,849 | South Yorkshire | Yorkshire & the Humber |
| Sheffield, Hallam | 72,763 | South Yorkshire | Yorkshire & the Humber |
| Sheffield, Heeley | 66,940 | South Yorkshire | Yorkshire & the Humber |
| Sheffield South East | 67,832 | South Yorkshire | Yorkshire & the Humber |
| Sherwood | 77,888 | Nottinghamshire | East Midlands |
| Shipley | 74,029 | West Yorkshire | Yorkshire & the Humber |
| Shrewsbury and Atcham | 82,238 | Shropshire | West Midlands |
| Sittingbourne and Sheppey | 83,917 | Kent | South East |
| Skipton and Ripon | 78,673 | North Yorkshire | Yorkshire & the Humber |
| Sleaford and North Hykeham | 94,761 | Lincolnshire | East Midlands |
| Slough | 86,818 | Berkshire | South East |
| Solihull | 78,760 | West Midlands | West Midlands |
| Somerton and Frome | 85,866 | Somerset | South West |
| South Basildon and East Thurrock | 74,441 | Essex | Eastern |
| South Cambridgeshire | 87,288 | Cambridgeshire | Eastern |
| South Derbyshire | 79,331 | Derbyshire | East Midlands |
| South Dorset | 73,809 | Dorset | South West |
| South East Cambridgeshire | 86,769 | Cambridgeshire | Eastern |
| South East Cornwall | 71,825 | Cornwall | South West |
| South Holland and The Deepings | 75,975 | Lincolnshire | East Midlands |
| South Leicestershire | 80,520 | Leicestershire | East Midlands |
| South Norfolk | 86,214 | Norfolk | Eastern |
| South Northamptonshire | 90,842 | Northamptonshire | East Midlands |
| South Ribble | 75,351 | Lancashire | North West |
| South Shields | 62,793 | Tyne and Wear | North East |
| South Staffordshire | 73,668 | Staffordshire | West Midlands |
| South Suffolk | 76,201 | Suffolk | Eastern |
| South Swindon | 73,118 | Wiltshire | South West |
| South Thanet | 73,223 | Kent | South East |
| South West Bedfordshire | 79,926 | Bedfordshire | Eastern |
| South West Devon | 72,535 | Devon | South West |
| South West Hertfordshire | 80,499 | Hertfordshire | Eastern |
| South West Norfolk | 78,455 | Norfolk | Eastern |
| South West Surrey | 79,096 | Surrey | South East |
| South West Wiltshire | 77,969 | Wiltshire | South West |
| Southampton, Itchen | 72,299 | Hampshire | South East |
| Southampton, Test | 70,116 | Hampshire | South East |
| Southend West | 69,043 | Essex | Eastern |
| Southport | 70,837 | Merseyside | North West |
| Spelthorne | 70,929 | Surrey | South East |
| St Albans | 73,727 | Hertfordshire | Eastern |
| St Austell and Newquay | 79,930 | Cornwall | South West |
| St Helens North | 75,593 | Merseyside | North West |
| St Helens South and Whiston | 79,061 | Merseyside | North West |
| St Ives | 68,795 | Cornwall | South West |
| Stafford | 72,572 | Staffordshire | West Midlands |
| Staffordshire Moorlands | 65,485 | Staffordshire | West Midlands |
| Stalybridge and Hyde | 73,064 | Greater Manchester | North West |
| Stevenage | 71,562 | Hertfordshire | Eastern |
| Stockport | 65,391 | Greater Manchester | North West |
| Stockton North | 66,649 | County Durham | North East |
| Stockton South | 76,870 | County Durham and North Yorkshire | North East |
| Stoke-on-Trent Central | 55,419 | Staffordshire | West Midlands |
| Stoke-on-Trent North | 68,298 | Staffordshire | West Midlands |
| Stoke-on-Trent South | 64,491 | Staffordshire | West Midlands |
| Stone | 69,378 | Staffordshire | West Midlands |
| Stourbridge | 69,891 | West Midlands | West Midlands |
| Stratford-on-Avon | 74,037 | Warwickshire | West Midlands |
| Streatham | 84,783 | London | London |
| Stretford and Urmston | 72,372 | Greater Manchester | North West |
| Stroud | 84,537 | Gloucestershire | South West |
| Suffolk Coastal | 81,910 | Suffolk | Eastern |
| Sunderland Central | 72,680 | Tyne and Wear | North East |
| Surrey Heath | 81,349 | Surrey | South East |
| Sutton and Cheam | 71,779 | London | London |
| Sutton Coldfield | 75,638 | West Midlands | West Midlands |
| Tamworth | 71,572 | Staffordshire | West Midlands |
| Tatton | 69,018 | Cheshire | North West |
| Taunton Deane | 88,676 | Somerset | South West |
| Telford | 68,921 | Shropshire | West Midlands |
| Tewkesbury | 83,958 | Gloucestershire | South West |
| The Cotswolds | 81,939 | Gloucestershire | South West |
| The Wrekin | 70,693 | Shropshire | West Midlands |
| Thirsk and Malton | 80,991 | North Yorkshire | Yorkshire & the Humber |
| Thornbury and Yate | 69,492 | Gloucestershire | South West |
| Thurrock | 79,659 | Essex | Eastern |
| Tiverton and Honiton | 82,953 | Devon | South West |
| Tonbridge and Malling | 79,278 | Kent | South East |
| Tooting | 76,954 | London | London |
| Torbay | 75,054 | Devon | South West |
| Torridge and West Devon | 80,403 | Devon | South West |
| Totnes | 69,863 | Devon | South West |
| Tottenham | 75,740 | London | London |
| Truro and Falmouth | 76,719 | Cornwall | South West |
| Tunbridge Wells | 74,823 | Kent | South East |
| Twickenham | 84,906 | London | London |
| Tynemouth | 77,261 | Tyne and Wear | North East |
| Uxbridge and South Ruislip | 70,365 | London | London |
| Vauxhall | 88,659 | London | London |
| Wakefield | 70,192 | West Yorkshire | Yorkshire & the Humber |
| Wallasey | 66,310 | Merseyside | North West |
| Walsall North | 67,177 | West Midlands | West Midlands |
| Walsall South | 68,024 | West Midlands | West Midlands |
| Walthamstow | 70,267 | London | London |
| Wansbeck | 63,339 | Northumberland | North East |
| Wantage | 90,867 | Oxfordshire | South East |
| Warley | 62,357 | West Midlands | West Midlands |
| Warrington North | 72,235 | Cheshire | North West |
| Warrington South | 86,015 | Cheshire | North West |
| Warwick and Leamington | 76,362 | Warwickshire | West Midlands |
| Washington and Sunderland West | 66,278 | Tyne and Wear | North East |
| Watford | 83,359 | Hertfordshire | Eastern |
| Waveney | 82,791 | Suffolk | Eastern |
| Wealden | 82,998 | East Sussex | South East |
| Weaver Vale | 70,551 | Cheshire | North West |
| Wellingborough | 80,765 | Northamptonshire | East Midlands |
| Wells | 84,124 | Somerset | South West |
| Welwyn Hatfield | 74,892 | Hertfordshire | Eastern |
| Wentworth and Dearne | 74,536 | South Yorkshire | Yorkshire & the Humber |
| West Bromwich East | 62,046 | West Midlands | West Midlands |
| West Bromwich West | 64,517 | West Midlands | West Midlands |
| West Dorset | 81,897 | Dorset | South West |
| West Ham | 97,947 | London | London |
| West Lancashire | 73,347 | Lancashire | North West |
| West Suffolk | 80,193 | Suffolk | Eastern |
| West Worcestershire | 76,241 | Worcestershire | West Midlands |
| Westminster North | 65,519 | London | London |
| Westmorland and Lonsdale | 67,789 | Cumbria | North West |
| Weston-Super-Mare | 82,526 | Somerset | South West |
| Wigan | 75,680 | Greater Manchester | North West |
| Wimbledon | 68,240 | London | London |
| Winchester | 75,582 | Hampshire | South East |
| Windsor | 75,038 | Berkshire | South East |
| Wirral South | 57,280 | Merseyside | North West |
| Wirral West | 55,550 | Merseyside | North West |
| Witham | 70,402 | Essex | Eastern |
| Witney | 83,845 | Oxfordshire | South East |
| Woking | 75,424 | Surrey | South East |
| Wokingham | 83,953 | Berkshire | South East |
| Wolverhampton North East | 61,660 | West Midlands | West Midlands |
| Wolverhampton South East | 62,883 | West Midlands | West Midlands |
| Wolverhampton South West | 60,534 | West Midlands | West Midlands |
| Worcester | 73,485 | Worcestershire | West Midlands |
| Workington | 61,370 | Cumbria | North West |
| Worsley and Eccles South | 75,219 | Greater Manchester | North West |
| Worthing West | 78,585 | West Sussex | South East |
| Wycombe | 78,093 | Buckinghamshire | South East |
| Wyre and Preston North | 74,775 | Lancashire | North West |
| Wyre Forest | 78,077 | Worcestershire | West Midlands |
| Wythenshawe and Sale East | 76,313 | Greater Manchester | North West |
| Yeovil | 82,468 | Somerset | South West |
| York Central | 74,899 | North Yorkshire | Yorkshire & the Humber |
| York Outer | 74,673 | North Yorkshire | Yorkshire & the Humber |
Scotland
| Constituency | Electorate 2019 | Council area |
| Aberdeen North | 62,489 | Aberdeen City |
| Aberdeen South | 65,719 | Aberdeen City |
| Airdrie and Shotts | 64,011 | North Lanarkshire |
| Angus | 63,952 | Angus |
| Argyll and Bute | 66,525 | Argyll and Bute |
| Ayr, Carrick and Cumnock | 71,970 | East Ayrshire and South Ayrshire |
| Banff and Buchan | 66,655 | Aberdeenshire |
| Berwickshire, Roxburgh and Selkirk | 74,518 | Scottish Borders |
| Caithness, Sutherland and Easter Ross | 46,930 | Highland |
| Central Ayrshire | 69,742 | North Ayrshire and South Ayrshire |
| Coatbridge, Chryston and Bellshill | 72,943 | North Lanarkshire |
| Cumbernauld, Kilsyth and Kirkintilloch East | 66,079 | East Dunbartonshire and North Lanarkshire |
| Dumfries and Galloway | 74,580 | Dumfries and Galloway |
| Dumfriesshire, Clydesdale and Tweeddale | 68,330 | Dumfries and Galloway, Scottish Borders and South Lanarkshire |
| Dundee East | 66,210 | Angus and Dundee City |
| Dundee West | 64,431 | Angus and Dundee City |
| Dunfermline and West Fife | 76,652 | Fife |
| East Dunbartonshire | 66,075 | East Dunbartonshire |
| East Kilbride, Strathaven and Lesmahagow | 81,224 | South Lanarkshire |
| East Lothian | 81,600 | East Lothian |
| East Renfrewshire | 72,232 | East Renfrewshire |
| Edinburgh East | 69,424 | City of Edinburgh |
| Edinburgh North and Leith | 81,336 | City of Edinburgh |
| Edinburgh South | 66,188 | City of Edinburgh |
| Edinburgh South West | 73,501 | City of Edinburgh |
| Edinburgh West | 72,507 | City of Edinburgh |
| Falkirk | 84,472 | Falkirk |
| Glasgow Central | 69,230 | Glasgow City |
| Glasgow East | 67,381 | Glasgow City |
| Glasgow North | 57,130 | Glasgow City |
| Glasgow North East | 61,075 | Glasgow City |
| Glasgow North West | 63,402 | Glasgow City |
| Glasgow South | 70,891 | Glasgow City |
| Glasgow South West | 64,575 | Glasgow City |
| Glenrothes | 65,672 | Fife |
| Gordon | 79,629 | Aberdeenshire |
| Inverclyde | 60,622 | Inverclyde |
| Inverness, Nairn, Badenoch and Strathspey | 78,059 | Highland |
| Kilmarnock and Loudoun | 74,517 | East Ayrshire |
| Kirkcaldy and Cowdenbeath | 72,853 | Fife |
| Lanark and Hamilton East | 77,659 | South Lanarkshire |
| Linlithgow and East Falkirk | 87,044 | West Lothian and Falkirk |
| Livingston | 82,285 | West Lothian |
| Midlothian | 70,544 | Midlothian |
| Moray | 71,035 | Moray |
| Motherwell and Wishaw | 68,856 | North Lanarkshire |
| Na h-Eileanan an Iar | 21,106 | Outer Hebrides |
| North Ayrshire and Arran | 73,534 | North Ayrshire |
| North East Fife | 60,905 | Fife |
| Ochil and South Perthshire | 78,776 | Clackmannanshire and Perth and Kinross |
| Orkney and Shetland | 34,211 | Orkney Islands and Shetland Islands |
| Paisley and Renfrewshire North | 72,007 | Renfrewshire |
| Paisley and Renfrewshire South | 64,385 | Renfrewshire |
| Perth and North Perthshire | 72,600 | Perth and Kinross |
| Ross, Skye and Lochaber | 54,230 | Highland |
| Rutherglen and Hamilton West | 80,918 | South Lanarkshire |
| Stirling | 68,473 | Stirling |
| West Aberdeenshire and Kincardine | 72,640 | Aberdeenshire |
| West Dunbartonshire | 66,517 | West Dunbartonshire |
Wales
| Constituency | Electorate 2019 | Council area |
| Aberavon | 50,750 | Neath Port Talbot |
| Aberconwy | 44,699 | Denbighshire |
| Alyn and Deeside | 62,789 | Flintshire; Wrexham |
| Arfon | 42,215 | Gwynedd |
| Blaenau Gwent | 50,739 | Blaenau Gwent |
| Brecon and Radnorshire | 55,490 | Powys |
| Bridgend | 63,303 | Bridgend |
| Caerphilly | 63,166 | Caerphilly; Newport |
| Cardiff Central | 64,037 | Cardiff |
| Cardiff North | 68,438 | Cardiff |
| Cardiff South and Penarth | 78,837 | Cardiff |
| Cardiff West | 68,508 | Cardiff |
| Carmarthen East and Dinefwr | 57,419 | Carmarthenshire |
| Carmarthen West and South Pembrokeshire | 59,158 | Carmarthenshire; Pembrokeshire |
| Ceredigion | 56,250 | Ceredigion |
| Clwyd South | 53,919 | Denbighshire; Wrexham |
| Clwyd West | 57,714 | Conwy; Denbighshire |
| Cynon Valley | 51,134 | Rhondda Cynon Taf |
| Delyn | 54,560 | Conwy; Flintshire |
| Dwyfor Meirionnydd | 44,362 | Gwynedd |
| Gower | 61,762 | Swansea |
| Islwyn | 55,423 | Caerphilly |
| Llanelli | 60,518 | Carmarthenshire; Swansea |
| Merthyr Tydfil and Rhymney | 56,322 | Caerphilly; Merthyr Tydfil |
| Monmouth | 67,098 | Monmouthshire |
| Montgomeryshire | 48,997 | Powys |
| Neath | 56,419 | Neath Port Talbot |
| Newport East | 58,554 | Newport |
| Newport West | 66,657 | Newport |
| Ogmore | 57,581 | Rhondda Cynon Taf |
| Pontypridd | 60,327 | Rhondda Cynon Taf |
| Preseli Pembrokeshire | 59,606 | Pembrokeshire |
| Rhondda | 50,262 | Rhondda Cynon Taf |
| Swansea East | 58,450 | Swansea |
| Swansea West | 57,078 | Swansea |
| Torfaen | 62,330 | Torfaen |
| Vale of Clwyd | 56,649 | Denbighshire |
| Vale of Glamorgan | 76,508 | Vale of Glamorgan |
| Wrexham | 49,737 | Wrexham |
| Ynys Môn | 51,925 | Isle of Anglesey |
Northern Ireland
| Constituency | Electorate 2019 | Council area |
| Belfast East | 66,245 | Belfast; Castlereagh |
| Belfast North | 72,225 | Belfast; Newtownabbey |
| Belfast South | 69,984 | Belfast; Castlereagh |
| Belfast West | 65,644 | Belfast; Lisburn |
| East Antrim | 64,830 | Carrickfergus; Larne; Moyle |
| East Londonderry | 69,246 | Coleraine; Londonderry/Derry |
| Fermanagh and South Tyrone | 72,848 | Fermanagh; Dungannon and South Tyrone |
| Foyle | 74,346 | Londonderry/Derry |
| Lagan Valley | 75,735 | Lisburn; Banbridge |
| Mid Ulster | 70,449 | Magherafelt; Cookstown; Dungannon and South Tyrone |
| Newry and Armagh | 81,226 | Armagh; Newry and Mourne |
| North Antrim | 77,134 | Ballymena; Ballymoney; Moyle |
| North Down | 67,099 | Ards; North Down |
| South Antrim | 71,711 | Antrim; Newtownabbey; Lisburn |
| South Down | 79,175 | Down; Newry and Mourne; Banbridge |
| Strangford | 66,928 | Ards; Castlereagh; Down |
| Upper Bann | 82,887 | Craigavon; Banbridge |
| West Tyrone | 66,259 | Omagh; Strabane |
Electorate summary
Summary of main boundary changes for the 2010 general election
- Scotland – No changes from 2005 election.
- Wales – Number of seats unchanged: three seats were abolished and three were created: Aberconwy, Arfon, and Dwyfor Meirionnydd.
- Northern Ireland – No extra or fewer seats allocated.
- England:
Proposed boundary changes
Under the terms of the Parliamentary Voting System and Constituencies Act 2011, the Sixth Review was based on reducing the total number of MPs from 650 to 600 and a strict electoral parity requirement that the electorate of all constituencies should be within a range of 5% either side of the electoral quota.
On 24 March 2020, the Minister of State for the Cabinet Office, Chloe Smith, issued a written statement to Parliament setting out the Government's thinking with regard to parliamentary boundaries. They propose to bring forward primary legislation to remove the statutory obligation to implement the 2018 Boundary Review recommendations, as well as set the framework for future boundary reviews in time for the next review which is due to begin in early 2021 and report no later than October 2023. It is proposed that the number of constituencies now remains at the current level of 650, rather than being reduced to 600, while retaining the requirement that the electorate should be no more than +/- 5% from the electoral quota.