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BRIEFING PAPER Number 7716, 23 September 2016 2018 Boundary Review: By Noel Dempsey

initial proposals for Elise Uberoi

Contents: 1. The 2018 Review of constituency boundaries 2. Extent of change 3. Local authority boundaries 4. Electorates of the proposed seats 5. Area of proposed constituencies 6. List of proposed constituencies

www.parliament.uk/commons-library | intranet.parliament.uk/commons-library | [email protected] | @commonslibrary 2 2018 Boundary Review: initial proposals for England

Contents

Summary 3 1. The 2018 Review of constituency boundaries 4 1.1 Initial proposals 4 1.2 Reduction in English seats 5 2. Extent of change 6 2.1 Constituencies remaining unchanged 6 2.2 Map: constituencies left unchanged 7 2.3 Changes to existing constituencies 8 2.4 Disappearing and new constituencies 9 Disappearing constituencies 9 New constituencies 11 2.5 Index of Change 11 Political parties and the Index of Change 13 2.6 Map: Index of Change of proposed constituencies 14 3. Local authority boundaries 15 4. Electorates of the proposed seats 18 4.1 Origins of the electorate 18 4.2 Deviation from the electoral quota 18 4.3 Largest and smallest electorates 19 5. Area of proposed constituencies 20 6. List of proposed constituencies 21

Contributing Author Matt Keep (maps)

Cover page image copyright: Straight scale, compasses and map {2}, by dewframe ✳ alt- n-anela. Licensed as Attribution-ShareAlike 2.0 Generic (CC BY-SA 2.0), image cropped

3 Commons Library Briefing, 23 September 2016

Summary

The 2018 Review of constituency boundaries is set to reduce the number of constituencies in the UK from 650 to 600, and reduce the variation in their electorates. On 13 September 2016, the Boundary Commission for England published its initial proposals for 501 English constituencies (a reduction of 32 seats). This briefing paper examines how the initial proposals would change the existing map of constituencies. It looks at: • the extent to which proposed constituencies can be identified with existing seats. For 70% of existing seats, the proposals suggest transferring more than 75% of their electors to a single new seat; • which seats remain unchanged and which ‘disappear’; • which existing constituencies would be most affected by the proposals; and • which proposed seats cannot straightforwardly be identified with existing seats. A number of proposed constituencies cross local authority boundaries. The proposed constituency with the largest electorate is Failsworth and Droylsden (78,502). The proposed seat with the smallest electorate is Dudley West (71,078).1 The proposed constituency covering the largest geographical area is Hexham and Morpeth (3,343 km2). The smallest proposed constituency is Camberwell and Vauxhall Bridge (8 km2). Library Briefing Paper 5929 Constituency boundary reviews and the number of MPs provides background to the boundary review process and discusses the 2013 Review which was halted. Information on the public consultation process that follows the publication of the initial proposals is provided in Library Briefing Paper 7696 Parliamentary boundary reviews: public consultation. Maps showing the existing and proposed constituency boundaries in each region are on http://constituencyboundaries.uk/. Maps and discussion for individual proposed constituencies are on the Boundary Commission for England’s website. Factors considered by the Boundary Commission for England in developing its proposals are explained in A Guide to the 2018 Review, also available on the Commission’s website.

1 The two seats on the Isle of Wight do not have to meet the requirement for their electorate to fall within 5% of the electoral quota (74,769), and have smaller electorates 4 2018 Boundary Review: initial proposals for England

1. The 2018 Review of constituency boundaries

The 2018 Review of constituency boundaries must report between 1 September and 1 October 2018 and follows the 2013 Review of constituency boundaries that was halted. The rules for the review are set out in the Parliamentary Constituencies Act 1986 (as amended). More information on the boundary review process and the 2013 Review is provided in Library Briefing Paper 5929 Constituency boundary reviews and the number of MPs. The four Boundary Commissions launched their reviews on 24 February 2016. They confirmed the electoral quota for the 2018 Review (based on the electorate at 1 December 2015) as 74,769. With the exception of four island seats, constituencies must be within 5% of the electoral quota.2 This means constituencies must have an electorate between 71,031 and 78,507.3 The table below shows how many seats are allocated to each part of the UK.

Allocation of seats in the 2018 Review Average electorate Number of existing Reduction constituencies 2018 allocation in seats % change Current New UK 650 600 50 8% 70,530 74,537 England 533 501 32 6% 72,127 74,651 Scotland 59 53 6 10% 66,593 73,526 Wales 40 29 11 28% 57,040 75,236 Northern Ireland 18 17 1 6% 66,146 73,139 The Boundary Commissions publish initial proposals that are open to revision following a public consultation process. A further consultation on the revised proposals may inform the final recommendations, which are subject to approval by Parliament. The new boundaries are due to take effect at the 2020 General Election.

1.1 Initial proposals The Boundary Commission for England published its initial proposals for 501 English constituencies on 13 September 2016. The constituencies proposed by the Boundary Commission for England are all wholly contained within regional boundaries and all contain entire wards.4

2 Two Isle of Wight constituencies and the two Scottish constituencies of Na h- Eileanan an Iar, and Orkney and Shetland are exempted from this requirement 3 Boundary Commission for Wales, 2018 Review, 24 February 2016; Boundary Commission for England, 2018 Review, 24 February 2016; Boundary Commission for Scotland, 2018 Review of UK Parliament constituencies, 24 February 2016; Boundary Commission for Northern Ireland, Current Review, 24 February 2016 4 The Boundary Commission uses ward boundaries as they existed on 7 May 2015, although in some areas these wards are no longer in use following more recent local government boundary reviews 5 Commons Library Briefing, 23 September 2016

In some instances, proposed constituencies cross local authority boundaries or geographical features such as rivers. Provisional proposals for constituencies in Northern Ireland were published on 6 September 2016 and are discussed in Library Briefing Paper 7700 2018 Review of Parliamentary constituencies: Northern Ireland. The initial proposals of the Boundary Commission for Wales were published on 13 September and are discussed in Library Briefing Paper 7704 2018 Review of Parliamentary constituencies: Wales. The initial proposals for Scotland are expected on 20 October.

1.2 Reduction in English seats The Boundary Review is set to reduce the number of constituencies in England from 533 to 501. 68 constituencies are left geographically unchanged in the initial proposals. Most proposed constituencies combine parts of two or more current seats. The region with the largest percentage reduction in seats is the North East which loses 4 of its 29 constituencies. Allocation of seats by region Current Allocated Region seats seats % change Eastern 58 57 2% East Midlands 46 44 4% London 73 68 7% North East 29 25 14% North West 75 68 9% South East 84 83 1% South West 55 53 4% West Midlands 59 53 10% Yorkshire and the Humber 54 50 7% Total 533 501 6% 6 2018 Boundary Review: initial proposals for England

2. Extent of change

Not all existing constituencies are changed in the Boundary Commission’s initial proposals, and the extent to which constituencies are changed varies.

2.1 Constituencies remaining unchanged 68 constituencies in England are left unchanged in the Boundary Commission’s initial proposals. Of these, 42 were won by the Conservatives at the 2015 General Election, and 26 by Labour. Additionally, the boundaries of the Eastbourne constituency (held by Conservative MP Caroline Ansell) are slightly changed to realign them with local ward boundaries, but this would not affect the seat’s electorate.

Constituencies left unchanged in the Boundary Commission for England's initial proposals

East Midlands South East Bassetlaw LAB John Mann Basingstoke CON Maria Miller Gainsborough CON Edward Leigh Beaconsfield CON Dominic Grieve High Peak CON Andrew Bingham Bracknell CON Phillip Lee Leicester East LAB Keith Vaz East Surrey CON Sam Gyimah Leicester South LAB Jonathan Ashworth East Worthing and Shoreham CON Tim Loughton Mansfield LAB Alan Meale Eastleigh CON Mims Davies South Holland and the Deepings CON John Hayes Epsom and Ewell CON Chris Grayling Gosport CON Caroline Dinenage Eastern Guildford CON Chelmsford CON Simon Burns Hastings and Rye CON Amber Rudd Epping Forest CON Eleanor Laing Maidenhead CON Hitchin and Harpenden CON Peter Lilley Reigate CON Crispin Blunt Thurrock CON Jackie Doyle-Price Sittingbourne and Sheppey CON Gordon Henderson Waveney CON Peter Aldous South West Surrey CON Jeremy Hunt West Suffolk CON Matt Hancock Witney CON

London South West Hornchurch and Upminster CON Dame Angela Watkinson Bristol North West CON Charlotte Leslie Kingston and Surbiton CON James Berry Bristol South LAB Karin Smyth Richmond Park CON Zac Goldsmith Exeter LAB Ben Bradshaw Twickenham CON Tania Mathias North Devon CON Peter Heaton-Jones North Somerset CON Liam Fox North East CON Rebecca Pow North Tyneside LAB Mary Glindon Torbay CON Kevin Foster Sunderland Central LAB Julie Elliott Weston-super-Mare CON John Penrose Tynemouth LAB Alan Campbell Yeovil CON Marcus Fysh

North West West Midlands Blackley and Broughton LAB Graham Stringer Birmingham, Hodge Hill LAB Liam Byrne Chorley LAB Lindsay Hoyle Burton CON Andrew Griffiths Garston and Halewood LAB Maria Eagle Cannock Chase CON Amanda Milling Knowsley LAB George Howarth Coventry North East LAB Colleen Fletcher Leigh LAB Andy Burnham CON Owen Paterson Makerfield LAB Yvonne Fovargue South Staffordshire CON Gavin Williamson , Gorton LAB Gerald Kaufman Sutton Coldfield CON Andrew Mitchell Manchester, Withington LAB Jeff Smith Salford and Eccles LAB Rebecca Long Bailey Yorkshire and the Humber St Helens North LAB Conor McGinn and CON Graham Stuart St Helens South and Whiston LAB Marie Rimmer East Yorkshire CON Greg Knight Wigan LAB Lisa Nandy Elmet and Rothwell CON Alec Shelbrooke Worsley and Eccles South LAB Barbara Keeley Wythenshawe and Sale East LAB Mike Kane

7 Commons Library Briefing, 23 September 2016

2.2 Map: constituencies left unchanged

8 2018 Boundary Review: initial proposals for England

2.3 Changes to existing constituencies Some existing constituencies are split up between several proposed constituencies, while others remain largely the same. 166 existing constituencies in England are wholly contained within a constituency proposed by the Boundary Commission; another 185 would have over 75% of their electorate transferred to a single proposed constituency.

Division of existing constituencies among proposed constituencies

Fraction of existing constituency contained within Number of existing % of existing proposed constituency constituencies constituencies Wholly contained in proposed constituency 166 31.1% 75-100% 185 34.7% 50-75% 145 27.2% <50% 37 6.9% Total 533 100%

Division of existing constituencies into proposed seats Fraction of existing seat's electorate contained in proposed seat 6.9% Wholly contained in 31.1% proposed constituency 27.2% 75-100%

50-75%

<50%

34.7%

Under the initial proposals, there are 37 existing seats that would not see a majority of their electors transferred to a single proposed constituency. These are listed below. 9 Commons Library Briefing, 23 September 2016

Existing constituencies where less than half of electors are transferred to any proposed constituency

Fraction of electorate going Existing constituency Party MP Proposed constituency to proposed seat Witham CON Priti Patel North East 49.9% Washington and Sunderland West LAB Sharon Hodgson Jarrow 49.8% Pudsey CON Stuart Andrew Shipley 49.8% North East Derbyshire LAB Natascha Engel Derbyshire Dales 49.7% Houghton and Sunderland South LAB Bridget Phillipson Easington and Houghton 49.5% Streatham LAB Chuka Umunna Clapham North and Stockwell 49.5% Hackney North and Stoke Newington LAB Diane Abbott Finsbury Park and Stoke Newington 48.5% Wealden CON Nusrat Ghani Lewes and Uckfield 48.2% Kenilworth and Southam CON Jeremy Wright Kenilworth and Leamington 48.1% CON Scott Mann South East Cornwall 47.9% Bethnal Green and Bow LAB Rushanara Ali Hackney West and Bethnal Green 47.8% Tonbridge and Malling CON Tom Tugendhat Sevenoaks 46.8% LAB Ian Lavery Berwick and Ashington 45.5% Oldham East and Saddleworth LAB Debbie Abrahams Littleborough and Saddleworth 45.0% Mid and North Poole CON Michael Tomlinson South Dorset 44.6% Halesowen and Rowley Regis CON James Morris Birmingham Selly Oak and Halesowen 44.4% Walsall North LAB David Winnick Walsall Central 44.3% Greenwich and Woolwich LAB Matthew Pennycook Greenwich and Deptford 43.9% Finchley and Golders Green CON Hampstead and Golders Green 43.4% Enfield, Southgate CON David Burrowes Hornsey and Wood Green 43.1% West Ham LAB Lyn Brown Bow and Canning Town 43.1% Lewisham, Deptford LAB Vicky Foxcroft Greenwich and Deptford 42.5% Lewisham West and Penge LAB Jim Dowd Lewisham and Catford 42.4% Meon Valley CON George Hollingbery Winchester 42.0% Sheffield South East LAB Clive Betts Rother Valley 41.6% Croydon Central CON Gavin Barwell Croydon Central 41.5% Lancaster and Fleetwood LAB Cat Smith Lancaster and Morecambe 41.2% Penistone and Stocksbridge LAB Angela Smith Sheffield Hallam and Stocksbridge 41.1% Faversham and Mid Kent CON Helen Whately Canterbury and Faversham 39.7% Mitcham and Morden LAB Siobhain McDonagh Merton and Wimbledon Central 39.6% Wyre and Preston North CON Fylde 36.7% Ilford South LAB Mike Gapes Ilford North 36.0% Liverpool, Walton LAB Steve Rotheram Liverpool Riverside 35.8% Bradford South LAB Judith Cummins Bradford West 34.3% Bournemouth West CON Conor Burns Poole 32.4% Tatton CON George Osborne 31.9% Birmingham, Hall Green LAB Roger Godsiff Birmingham Yardley 26.0%

2.4 Disappearing and new constituencies Disappearing constituencies An existing seat can be said to ‘disappear’ if it does not contribute the largest number of voters to any of the proposed seats: disappearing seats are split into fragments that do not form the largest part of any proposed seat.5 There are 38 disappearing seats in England, listed in the table below.

5 Electoral Calculus, New Constituency Boundaries for Britain 2018, Disappearing Seats, 15 September 2016, http://www.electoralcalculus.co.uk/boundaries2018.html 10 2018 Boundary Review: initial proposals for England

Disappearing seats: existing constituencies that do not make up the largest share of any proposed constituency Current Constituency Party Region MP

Birmingham, Hall Green Labour West Midlands Roger Godsiff Bournemouth West Conservative South West Conor Burns Bradford South Labour Yorkshire and The Humber Judith Cummins Chelsea and Fulham Conservative London Greg Hands Dudley North Labour West Midlands Ian Austin Enfield, Southgate Conservative London David Burrowes Faversham and Mid Kent Conservative South East Helen Whately Gedling Labour East Midlands Vernon Coaker Great Labour Yorkshire and The Humber Melanie Onn Hackney North and Stoke Newington Labour London Diane Abbott Haltemprice and Howden Conservative Yorkshire and The Humber David Davis Houghton and Sunderland South Labour North East Bridget Phillipson Ilford South Labour London Mike Gapes Kenilworth and Southam Conservative West Midlands Jeremy Wright Lancaster and Fleetwood Labour North West Cat Smith Leeds West Labour Yorkshire and The Humber Rachel Reeves Lewisham West and Penge Labour London Jim Dowd Lewisham, Deptford Labour London Vicky Foxcroft Liverpool, Walton Labour North West Steve Rotheram Meon Valley Conservative South East George Hollingbery Middlesbrough Labour North East Andy McDonald Mitcham and Morden Labour London Siobhain McDonagh Newcastle upon Tyne Central Labour North East Chi Onwurah North Cornwall Conservative South West Scott Mann North East Derbyshire Labour East Midlands Natascha Engel North Herefordshire Conservative West Midlands Bill Wiggin Oldham East and Saddleworth Labour North West Debbie Abrahams Pendle Conservative North West Andrew Stephenson Penistone and Stocksbridge Labour Yorkshire and The Humber Angela Smith Stockport Labour North West Ann Coffey Stockton North Labour North East Alex Cunningham Stoke-on-Trent Central Labour West Midlands Tristram Hunt Tatton Conservative North West George Osborne Walsall North Labour West Midlands David Winnick Wansbeck Labour North East Ian Lavery Wirral South Labour North West Alison McGovern Witham Conservative East of England Priti Patel Workington Labour North West Sue Hayman

The number of disappearing seats is not evenly spread out across regions, as shown in the chart below.

Disappearing seats, by region

9 8 7 6 5 4 3 2 1 0 East East of London North North South South West Yorkshire Midlands England East West East West Midlands and the Humber

11 Commons Library Briefing, 23 September 2016

New constituencies A proposed constituency can be defined as ‘new’ if it does not draw 50% or more of its electorate from any existing seat. There are 34 new constituencies in the Boundary Commission’s initial proposals. These are listed in the table below. The existing constituency that contributes the largest share of the new constituency’s electorate is listed as the ‘base’ constituency.

New constituencies: seats drawing less than 50% of their electorate from a single existing constituency % of electorate from base Proposed constituency Region Base constituency constituency Sherwood East Midlands Sherwood 49.3% Woolwich London Erith and Thamesmead 49.3% Warley West Midlands Warley 49.2% Dudley East and Tipton West Midlands West Bromwich West 48.8% Bow and Canning Town London West Ham 48.1% Littleborough and Saddleworth North West Rochdale 48.3% Tonbridge and The Weald South East Tonbridge and Malling 48.1% Rotherham Yorkshire and The Humber Rotherham 48.2% Southall and Heston London Ealing, Southall 48.2% Coventry West and Meriden West Midlands Coventry North West 47.8% Hackney West and Bethnal Green London Bethnal Green and Bow 47.6% Harrow and Stanmore London Harrow West 47.7% Streatham and Mitcham London Streatham 47.0% Blandford and Wimborne South West North Dorset 46.4% Sunderland West North East Washington and Sunderland West 45.9% Pudsey Yorkshire and The Humber Pudsey 45.4% Forest Gate and Loxford London West Ham 44.2% Ashton-under-Lyne North West Stalybridge and Hyde 44.9% Grimsby North and Barton Yorkshire and The Humber Cleethorpes 43.8% Croydon Central London Croydon Central 42.6% Halifax Yorkshire and The Humber Halifax 43.0% Middlesbrough West and Stockton East North East Stockton South 42.1% and Wanstead London Leyton and Wanstead 42.3% Failsworth and Droylsden North West Ashton-under-Lyne 41.5% Greenwich and Deptford London Greenwich and Woolwich 39.8% High Weald South East Wealden 37.7% Peckham and Lewisham West London Camberwell and Peckham 37.9% Bramhall and North West Cheadle 38.8% Alfreton and Clay Cross East Midlands Amber Valley 39.7% Birmingham Selly Oak and Halesowen West Midlands Halesowen and Rowley Regis 38.6% Finchley and Southgate London Finchley and Golders Green 37.6% North North West Wyre and Preston North 35.4% Broadstone, Ferndown and Kinson South West Mid Dorset and North Poole 36.2% Sheffield East Yorkshire and The Humber Sheffield South East 36.0%

2.5 Index of Change Academics Colin Rallings, Ron Johnston and Michael Thrasher use an ‘Index of Change’ to quantify the extent to which constituencies are changed by boundary reviews. They explain that this Index is calculated by dividing the total numbers added to and removed from an existing ‘base’ constituency by that constituency’s total electorate.6 The base constituency is the existing constituency that contributes most to the

6 Colin Rallings, Ron Johnston and Michael Thrasher, ‘Changing the boundaries but keeping the disproportionality: the electoral impact of the Fifth Periodical Reviews by the Parliamentary Boundary Commissions for England and Wales’, The Political Quarterly, 2008, 79:1, pp80-90 12 2018 Boundary Review: initial proposals for England

proposed constituency. The Index of Change is expressed as a percentage, as demonstrated in the box below.

Box 1: Calculating the Index of Change (Total deletions from base + total additions to base) X 100 Electorate of base constituency

The table below provides a summary of changes in each English region using the Index of Change. In 34% of proposed constituencies, the number of electors being added to and removed from the base constituency is greater than half of the base electorate (i.e. the Index of Change is over 50%). In 34 proposed constituencies the Index of Change exceeds 100%, meaning the number of electors leaving and joining the base is greater than the base electorate. In such cases the term ‘base’ is not very meaningful. Extent of change in constituency boundaries: Index of Change Index of change None 0-10 10-25 25-50 50-100 100+ Total

England 69 82 93 85 138 34 501 East Midlands 7 8 7 9 11 2 44 East of England 6 19 14 13 5 0 57 London 4 1 15 10 26 12 68 North East 3 0 3 9 8 2 25 North West 14 8 11 10 20 5 68 South East 16 23 15 14 13 2 83 South West 9 12 12 7 11 2 53 West Midlands 7 4 5 10 23 4 53 Yorkshire and the Humber 3 7 11 3 21 5 50

These proposals suggest a more extensive revision of constituency boundaries than the boundary changes that came into force at the 2010 General Election. More than half of the constituencies proposed in the boundary review published in 2006 had an Index of Change of 10% or less. The Index of Change exceeded 50% in 75 out of 533 English constituencies, compared to 172 out of 501 now.7 The 2013 Review of constituency boundaries had proposed a similar level of change to the current proposals, but was halted in 2012.

7 House of Commons Library, Research Paper10/02 13 Commons Library Briefing, 23 September 2016

Box 2: Example – the Index of Change for Aldershot The proposed Aldershot constituency draws most of its electorate from the current Aldershot seat, which therefore counts as the ‘base constituency’. 62,487 of Aldershot’s 69,903 voters are transferred to the proposed Aldershot seat. The remaining 7,416 voters are transferred to another proposed seat. The proposed Aldershot seat also takes 12,228 voters from the current North East Hampshire seat. The Index of Change for Aldershot is 28.1%: (7,416 + 12,228) x100 69,903

Political parties and the Index of Change The average Index of Change across constituencies in England is 38.5%. It is possible to calculate an average Index of Change by political party, by looking at the ‘base’ constituencies currently held by political parties. Excluded from this calculation are the 38 disappearing constituencies (see above), which are not the base constituency to any proposed seat. Additionally, the 6 constituencies that function as the base constituency to more than one proposed seat are also excluded from the calculation.

Average Index of Change, by party

England

Other

Labour

Liberal Democrat

Conservative

0% 10% 20% 30% 40% 50% 60% 14 2018 Boundary Review: initial proposals for England

2.6 Map: Index of Change of proposed constituencies

15 Commons Library Briefing, 23 September 2016

3. Local authority boundaries

The table below shows the 35 proposed constituencies that cross the boundary between two counties, or between a county and a unitary authority.

Proposed constituencies that cross county and Unitary Authority boundaries, listed by region Constituency Region Counties & UAs*

Daventry and Lutterworth East Midlands Leicestershire Northamptonshire Derby South East Midlands Derbyshire Derby* Rutland and Melton East Midlands Leicestershire Rutland* South Derbyshire East Midlands Derbyshire Derby* Amber Valley East Midlands Derbyshire Derby* North East Hertfordshire East of England Cambridgeshire Hertfordshire South West Norfolk East of England Cambridgeshire Norfolk North West Cambridgeshire East of England Cambridgeshire Peterborough* Rochford and Southend East East of England Essex Southend-on-Sea* South Basildon and East Thurrock East of England Essex Thurrock* Southend West East of England Essex Southend-on-Sea* City of Durham North East Tyne and Wear County Durham* Easington and Houghton North East Tyne and Wear County Durham* Newcastle upon Tyne North West North East Tyne and Wear Northumberland* North Durham and -le-Street North East Tyne and Wear County Durham* West Durham and North East Tyne and Wear County Durham* Southport North West Lancashire Merseyside Blackpool South North West Lancashire Blackpool* Bramhall and Poynton North West Greater Manchester Cheshire East* Ellesmere Port and Neston North West Merseyside Cheshire West and Chester* Rossendale and Darwen North West Lancashire Blackburn with Darwen* Altrincham and Tatton Park North West Greater Manchester Cheshire East* High Weald South East East Sussex Kent East and Newhaven South East East Sussex Brighton and * Portsmouth North South East Hampshire Portsmouth* Rochester and Strood South East Kent Medway* Buckingham South East Buckinghamshire Milton Keynes* Bournemouth North and Christchurch South Bournemouth* Dursley, Thornbury and Yate South West Gloucestershire South Gloucestershire* North East Somerset South Bath and North East Somerset* Totnes South West Devon Torbay* Bideford, Bude and Launceston South West Devon Cornwall* West Staffordshire West Midlands Staffordshire Stoke-on-Trent* Barnsley East and Hemsworth Yorkshire and The Humber South Yorkshire West Yorkshire Valley Yorkshire and The Humber South Yorkshire West Yorkshire * Unitary Authority The requirement for proposed constituencies to be within 5% of the electoral quota means that it is impossible for the counties in the list below to contain a whole number of constituencies.

Counties that cannot contain a whole number of seats Buckinghamshire Northamptonshire Dorset Nottinghamshire Gloucestershire Oxfordshire Leicestershire Warwickshire Lincolnshire Worcestershire

16 2018 Boundary Review: initial proposals for England

Equally, the 39 unitary authorities listed below cannot contain a whole number of seats.

Unitary Authorities that cannot contain a whole number of seats Bath and North East Somerset East Riding of Yorkshire North Lincolnshire Southend-on-Sea Bedford Halton Nottingham Stockton-on-Tees Blackburn with Darwen Herefordshire, County of Peterborough Stoke-on-Trent Blackpool Isle of Wight Plymouth Telford and Wrekin Bournemouth Kingston upon Hull, City of Poole Thurrock Brighton and Hove Luton Portsmouth Torbay Central Bedfordshire Medway Reading West Berkshire Cheshire East Middlesbrough Redcar and Cleveland Wiltshire Cheshire West and Chester Milton Keynes Rutland Windsor and Maidenhead Derby North East Lincolnshire Southampton

Under the Boundary Commission’s proposals, 38 of the 68 constituencies in London would cross borough boundaries. Of these, two contain parts of three London Boroughs. Proposed London constituencies crossing London Borough boundaries Proposed Constituency London Boroughs

Barking Barking and Dagenham Redbridge Battersea Lambeth Wandsworth Beckenham Bromley Croydon Bermondsey and Old Southwark Lambeth Southwark Bow and Canning Town Newham Tower Hamlets Brentford and Chiswick Ealing Hounslow Camberwell and Vauxhall Bridge Lambeth Southwark Chingford and Woodford Green Redbridge Waltham Forest Chipping Barnet and Mill Hill Barnet Enfield Cities of London and Westminster Camden City of London Westminster Croydon North Bromley Croydon Dagenham and Rainham Barking and Dagenham Havering Dulwich and West Norwood Lambeth Southwark Ealing Central and Shepherd's Bush Ealing Hammersmith and Fulham Finchley and Southgate Barnet Enfield Finsbury Park and Stoke Newington Hackney Islington Forest Gate and Loxford Newham Redbridge Greenwich and Deptford Greenwich Lewisham Hackney West and Bethnal Green Hackney Tower Hamlets Hampstead and Golders Green Barnet Camden Hillingdon and Uxbridge Ealing Hillingdon Holborn and St Pancras Camden Islington Hornsey and Wood Green Enfield Haringey Kenton Brent Harrow Leytonstone and Wanstead Redbridge Waltham Forest Peckham and Lewisham West Lewisham Southwark Queen's Park and Regent's Park Brent Westminster Richmond Park Kingston upon Thames Richmond upon Thames Romford Barking and Dagenham Havering Ruislip, Northwood and Pinner Harrow Hillingdon Southall and Heston Ealing Hounslow Streatham and Mitcham Croydon Lambeth Merton Sutton and Cheam Merton Sutton Tooting Merton Wandsworth Wembley and Harrow on the Hill Brent Harrow Willesden Brent Hammersmith and Fulham Wimbledon Common and Putney Merton Wandsworth Woolwich Bexley Greenwich

17 Commons Library Briefing, 23 September 2016

Kensington and Chelsea is the only borough that contains a whole number of constituencies (one). Five other London Boroughs have an electorate that means they could contain a whole number of constituencies (Bromley, Croydon, Hackney, Tower Hamlets and Waltham Forest), but these all contain parts of constituencies that cross borough boundaries. 18 2018 Boundary Review: initial proposals for England

4. Electorates of the proposed seats

4.1 Origins of the electorate Most proposed constituencies draw their electorate from two existing seats. Three proposed constituencies are combinations of fragments from five existing seats. Origins of proposed constituencies

Number of Existing constituencies proposed % of proposed contributing to proposed seats constituencies constituencies

One 91 18.2% Two 262 52.3% Three 125 25.0% Four 20 4.0% Five 3 0.6% Total 501 100%

4.2 Deviation from the electoral quota The Boundary Commission for England is required to propose constituencies that have an electorate within 5% of the electoral quota of 74,769: constituency electorates must be between 71,031 and 78,507, except for the two constituencies on the Isle of Wight. The proposed Isle of Wight East and Isle of Wight West seats deviate from the electoral quota by -28.8% and -30.2% respectively. The electorates of the other proposed constituencies are distributed fairly uniformly across the permitted range – boundaries resulting in constituency electorates that are closer to the quota are not favoured over boundaries that result in electorates at the periphery of the permitted range.

Deviation of electorates of proposed constituencies from the Electoral Quota Deviation from Electoral Number of Quota (+/-) constituencies 0-1% 93 1-2% 82 2-3% 96 3-4% 120 4-5% 108 >5% 2 Total 501

19 Commons Library Briefing, 23 September 2016

Deviation of electorates of proposed constituencies from electoral quota

Number of constituencies 69 60 51 52 48 48 43 45 44 39

-4 to -5% -3 to -4% -2 to -3% -1 to -2% 0 to -1% 0 to +1% +1 to +2% +2 to +3% +3 to +4% +4 to +5% % deviation from quota Note: Chart excludes the proposed Isle of Wight East and Isle of Wight West constituencies 4.3 Largest and smallest electorates Under the provisional proposals the largest constituency in England (in terms of electorate) would be Failsworth and Droylsden, with 78,502 electors as at 1 December 2015. It comprises electors from the following existing seats: • Ashton-under-Lyne (49.4%); • Denton and Reddish (14.4%); • Oldham East and Saddleworth (20.9%); and • Oldham West and Royton (32.1%). Proposed constituencies with largest electorates Proposed constituency Region Electorate 1 Failsworth and Droylsden North West 78,502 2 Rochester and Strood South East 78,455 3 Witney South East 78,455 4 Plymouth South South West 78,406 5 Brighton Central and Hove South East 78,387

The constituencies with the smallest electorates are Isle of Wight West (52,180 electors) and the Isle of Wight East (53,268 electors), which are exempted from the requirement to be within 5% of the electoral quota. The proposed Dudley West constituency has the smallest electorate after these two, but is over the minimum permissible electorate by 23 voters. Proposed constituencies with smallest electorates Proposed constituency Region Electorate 1 Isle of Wight West South East 52,180 2 Isle of Wight East South East 53,268 3 Dudley West West Midlands 71,054 4 West Staffordshire West Midlands 71,078 5 Broadland East of England 71,085

20 2018 Boundary Review: initial proposals for England

5. Area of proposed constituencies

The reduction in the number of seats means that the average area of an English constituency increases to 265 km2. On average, constituencies in the South West region will be the largest (with an average area of 460 km2) while London constituencies will be an average of just 23 km2. Average area of proposed constituencies by region, ranked largest to smallest Average Number of constituency area Total area (km2) constituencies (km2)

England 132,949 501 265 South West 24,389 53 460 East Midlands 15,811 44 359 North East 8,676 25 347 East of England 19,587 57 344 Yorkshire and the Humber 15,562 50 311 West Midlands 13,004 53 245 South East 19,406 83 234 North West 14,920 68 219 London 1,595 68 23

The largest of the proposed English constituencies is Hexham and Morpeth in the North East, which has an area of 3,343 square kilometres. There are five other proposed constituencies covering more than 2,000 km2. By comparison, the area of the largest existing English constituency, Penrith and The Border, is 3,134 km2; the existing Hexham constituency is the second largest in England with an area of 2,440 km2. Proposed constituencies covering the largest geographical area

Proposed constituency Region Electorate Area (km2)

1 Hexham and Morpeth North East 77,566 3,343.1 2 Penrith and Solway North West 72,284 2,823.7 3 Thirsk and Malton Yorkshire and The Humber 73,125 2,270.9 4 Ludlow and West Midlands 77,533 2,122.3 5 Westmorland and Lonsdale North West 72,371 2,060.7

The smallest of the proposed constituencies is Camberwell and Vauxhall Bridge in London, with an area of 8.2 square kilometres. The 20 smallest proposed constituencies are all in London. Proposed constituencies covering the smallest geographical area

Proposed constituency Region Electorate Area (km2)

1 Camberwell and Vauxhall Bridge London 71,307 8.2 2 Islington London 73,470 8.3 3 Hackney West and Bethnal Green London 75,449 8.6 4 Finsbury Park and Stoke Newington London 77,715 8.7 5 Clapham North and Stockwell London 74,034 8.9

List of proposed constituencies Proposed Index of Proposed constituency Base Consituency Electorate Area (km2) change

Accrington Hyndburn 72,513 102.7 31.1% Aldershot Aldershot 74,715 56.4 28.1% Aldridge, Brownhills and Bloxwich Aldridge-Brownhills 76,572 51.4 31.2% Alfreton and Clay Cross Amber Valley 77,557 162.5 124.8% Altrincham and Tatton Park Altrincham and Sale West 77,647 189.3 55.0% Amber Valley Mid Derbyshire 73,929 147.8 90.0% Arundel and South Downs Arundel and South Downs 74,331 743.9 16.6% Ashfield Ashfield 76,418 102 0.1% Ashford Ashford 71,303 389.9 23.5% Ashton-under-Lyne Stalybridge and Hyde 76,869 54.4 111.4% Aylesbury Aylesbury 77,715 223.5 38.6% Banbury and Bicester Banbury 78,250 337.9 8.4% Barking Barking 76,530 22.6 40.9% Barnsley Central Barnsley Central 75,665 67.9 24.5% Barnsley East and Hemsworth Barnsley East 72,454 128.7 84.3% Barrow and Furness Barrow and Furness 75,278 643.9 11.7% Basildon and Billericay Basildon and Billericay 74,410 112.3 68.2% Basingstoke Basingstoke 78,026 58.9 0.0% Bassetlaw Bassetlaw 76,764 480.4 0.0% Bath Bath 73,586 116.2 20.7% Batley and Morley Morley and Outwood 74,680 56.4 65.6% Battersea Battersea 78,002 12.1 11.6% Beaconsfield Beaconsfield 73,984 176.3 0.0% Bebington and Heswall Wirral West 75,393 160.3 83.7% Beckenham Beckenham 74,538 23.4 85.6% Bedford Bedford 73,269 44.7 6.7% Bermondsey and Old Southwark Bermondsey and Old Southwark 76,835 12.2 19.4% Berwick and Ashington Berwick-upon-Tweed 74,891 1546.6 61.7% Beverley and Holderness Beverley and Holderness 76,641 829.9 0.0% Bexhill and Battle Bexhill and Battle 73,474 281.3 38.0% Bideford, Bude and Launceston Torridge and West Devon 71,465 1359.3 86.2% Birkenhead Birkenhead 72,672 35.3 19.4% Birmingham Brandwood Birmingham, Selly Oak 71,357 21.7 99.0% Birmingham Edgbaston Birmingham, Edgbaston 72,215 25.5 68.4% Birmingham Erdington and Pheasey Birmingham, Erdington 72,786 27.5 67.6% Birmingham Hodge Hill Birmingham, Hodge Hill 73,173 20.5 0.0% Birmingham Ladywood Birmingham, Ladywood 73,050 33.1 64.2% Birmingham Northfield Birmingham, Northfield 72,519 25.6 99.5% Birmingham Perry Barr Birmingham, Perry Barr 76,201 26.1 64.2% Birmingham Selly Oak and Halesowen Halesowen and Rowley Regis 77,485 32.9 126.4% Birmingham Yardley Birmingham, Yardley 72,864 21.7 49.4% Bishop Auckland Bishop Auckland 72,967 474.8 31.2% Blackburn Blackburn 72,816 42.9 6.0% Blackley and Broughton Blackley and Broughton 72,003 28.2 0.0% Blackpool North and Fleetwood Blackpool North and Cleveleys 71,687 51.9 64.6% Blackpool South Blackpool South 74,876 38.1 37.1% Blandford and Wimborne North Dorset 76,796 519.8 107.9% Blaydon Blaydon 75,601 76.2 94.0% Blyth Valley 76,694 102.2 28.2% Bodmin and St Austell St Austell and Newquay 72,351 659.5 79.1% Bognor Regis and Littlehampton Bognor Regis and Littlehampton 78,189 79.5 8.3% Bolsover and Dronfield Bolsover 76,946 202.1 90.5% Bolton North East Bolton North East 73,610 39.1 40.5% Bolton West Bolton West 77,798 74.6 11.6% Bootle Bootle 77,290 30.6 44.4% Boston and Skegness Boston and Skegness 71,989 907.7 9.9% Bosworth Bosworth 77,561 302.1 25.1% Bournemouth North and Christchurch Christchurch 73,889 63.9 97.2% Bournemouth South Bournemouth East 71,427 25.4 58.6% Bow and Canning Town West Ham 77,832 15.7 103.4% Bracknell Bracknell 76,917 73.9 0.0% Bradford East Bradford East 74,954 31 15.4% Bradford West Bradford West 73,686 46 50.9% Braintree Braintree 75,132 376 33.5% Proposed Index of Proposed constituency Base Consituency Electorate Area (km2) change

Bramhall and Poynton Cheadle 76,106 100 124.3% Brentford and Chiswick Brentford and Isleworth 72,875 23.4 53.1% Brentwood and Ongar Brentwood and Ongar 76,809 382.7 41.9% Bridgnorth, Wellington and The Wrekin The Wrekin 77,256 615 55.0% Bridgwater and West Somerset Bridgwater and West Somerset 73,223 1064.4 8.3% Brighton Central and Hove Hove 78,387 22.9 36.8% Brighton East and Newhaven Brighton, Kemptown 71,505 54 70.3% Brighton North Brighton, Pavilion 75,072 44.5 62.7% Bristol East Bristol East 76,627 25.2 12.4% Bristol North West Bristol North West 71,869 169.4 0.0% Bristol South Bristol South 78,060 24.7 0.0% Bristol West Bristol West 73,639 16 10.3% Broadland Broadland 71,085 795.7 13.9% Broadstone, Ferndown and Kinson Mid Dorset and North Poole 72,792 65.4 132.1% Bromley and Chislehurst Bromley and Chislehurst 75,812 44.6 56.2% Bromsgrove and Droitwich Bromsgrove 78,121 202.2 59.1% Broxbourne Broxbourne 72,593 71.2 3.1% Broxtowe and Hucknall Broxtowe 74,703 75.5 97.9% Buckingham Buckingham 77,080 747.9 43.2% Burnley Burnley 76,133 101.1 60.9% Burton Burton 72,542 243.4 0.0% Bury Bury North 72,781 57.5 12.7% Bury St Edmunds Bury St Edmunds 77,828 415.9 6.8% Calder Valley Calder Valley 76,601 299.6 89.8% Camberwell and Vauxhall Bridge Camberwell and Peckham 71,307 8.2 82.7% Cambridge Cambridge 75,779 48.7 12.7% Cannock Chase Cannock Chase 73,470 78.9 0.0% Canterbury and Faversham Canterbury 72,011 411.2 79.7% Carlisle Carlisle 76,825 1054.4 27.0% Carshalton and Wallington Carshalton and Wallington 75,579 27.8 10.7% Castle Point Castle Point 75,130 74.2 40.2% Central Devon Central Devon 71,231 1685.7 33.9% Central Suffolk and North Ipswich Central Suffolk and North Ipswich 74,198 797.4 1.7% Charnwood Charnwood 72,294 216.4 52.5% Chatham and The Mallings Chatham and Aylesford 77,227 79.6 35.6% Chelmsford Chelmsford 78,107 42.4 0.0% Chelmsley Wood and Solihull North Meriden 77,455 64.6 89.9% Cheltenham Cheltenham 72,665 35.3 5.9% Chesham and Amersham Chesham and Amersham 77,089 238.4 12.4% Chesterfield Chesterfield 75,675 57.7 6.1% Chichester Chichester 75,087 572.9 4.6% Chingford and Woodford Green Chingford and Woodford Green 71,252 20.9 12.6% Chippenham 77,385 573.2 83.0% Chipping Barnet and Mill Hill Chipping Barnet 72,580 48.5 57.6% Chorley Chorley 73,323 155.2 0.0% Cities of London and Westminster Cities of London and Westminster 75,693 20 30.3% City of Chester City of Chester 73,723 137.9 5.7% City of Durham City of Durham 73,244 217.4 40.3% Clapham North and Stockwell Vauxhall 74,034 8.9 74.8% Clitheroe and Colne Ribble Valley 76,972 303.9 96.6% Colchester Colchester 74,140 51.1 2.6% Colne Valley Colne Valley 74,899 252.4 29.3% Congleton 71,287 219.4 0.3% Corby Corby 73,718 542 7.9% Coventry North East Coventry North East 72,135 27.2 0.0% Coventry South Coventry South 77,914 29.3 84.2% Coventry West and Meriden Coventry North West 77,586 109.9 104.9% Crawley Crawley 74,325 56.1 5.3% Crewe and Nantwich 72,326 140.1 0.1% Croydon Central Croydon Central 72,694 22.1 114.5% Croydon North Croydon North 77,793 16.8 47.8% Croydon South Croydon South 71,401 44.6 68.4% Dagenham and Rainham Dagenham and Rainham 73,013 42.7 29.5% Darlington Darlington 74,929 197.5 17.1% Proposed Index of Proposed constituency Base Consituency Electorate Area (km2) change

Dartford Dartford 72,180 76.3 6.2% Daventry and Lutterworth Daventry 71,580 708.4 49.4% Derby North Derby North 76,296 30.3 71.7% Derby South Derby South 76,800 79.5 91.3% Derbyshire Dales Derbyshire Dales 74,324 1040.1 22.0% Devizes Devizes 75,543 1080.7 38.6% Dewsbury Dewsbury 77,167 126.4 0.1% Doncaster Central Doncaster Central 72,729 68.6 8.3% Doncaster East Don Valley 71,593 299.7 73.7% Doncaster West Doncaster North 74,312 207.2 92.9% Dover Dover 76,650 270.7 25.3% Dudley East and Tipton West Bromwich West 75,512 31.4 102.9% Dudley West Dudley South 71,054 29.3 50.5% Dulwich and West Norwood Dulwich and West Norwood 71,839 14.5 50.6% Dursley, Thornbury and Yate Thornbury and Yate 77,355 457.1 54.1% Ealing Central and Shepherd's Bush Ealing Central and Acton 76,085 17.8 56.9% Ealing North Ealing North 73,408 20.8 51.1% Easington and Houghton Easington 74,094 92.9 61.5% East Devon East Devon 77,959 371.6 2.1% East Durham 78,060 306.7 84.3% East Ham East Ham 71,687 20.5 50.3% East Hampshire East Hampshire 72,314 468.3 43.7% East Surrey East Surrey 77,146 259.4 0.0% East Worthing and Shoreham East Worthing and Shoreham 71,723 57.4 0.0% East Yorkshire East Yorkshire 77,061 1056.8 0.0% Eastbourne Eastbourne 74,670 56.6 0.0% Eastleigh Eastleigh 77,814 78.1 0.0% Eddisbury and Northwich Eddisbury 71,748 495.3 84.1% Edmonton Edmonton 72,514 21.7 14.4% Ellesmere Port and Neston Ellesmere Port and Neston 77,028 152.6 19.3% Elmet and Rothwell Elmet and Rothwell 77,287 246 0.0% Eltham Eltham 71,122 24.2 15.1% Enfield Enfield North 75,302 40.6 14.1% Epping Forest Epping Forest 73,521 126.2 0.0% Epsom and Ewell Epsom and Ewell 77,417 51.7 0.0% Erewash Erewash 75,973 68.6 8.1% Erith and Crayford Bexleyheath and Crayford 77,518 33.2 72.5% Esher and Walton Esher and Walton 74,117 67 5.6% Evesham and South Warwickshire Mid Worcestershire 78,036 848.3 95.4% Exeter Exeter 71,404 38.1 0.0% Failsworth and Droylsden Ashton-under-Lyne 78,502 32.8 120.2% Falmouth and Camborne Camborne and Redruth 72,184 216 65.1% Fareham Fareham 77,933 72.4 2.9% Farnworth Bolton South East 71,142 50 62.7% Feltham and Hounslow Feltham and Heston 72,678 25.8 71.6% Filton and Bradley Stoke Filton and Bradley Stoke 75,495 115.6 8.7% Finchley and Southgate Finchley and Golders Green 76,857 21.3 128.5% Finsbury Park and Stoke Newington Islington North 77,715 8.7 82.9% Folkestone and Hythe Folkestone and Hythe 77,333 365.4 5.0% Forest Gate and Loxford West Ham 77,497 10.8 110.4% Fylde Fylde 72,103 194.1 33.0% Gainsborough Gainsborough 74,332 1203.1 0.0% Garston and Halewood Garston and Halewood 71,942 63.7 0.0% Gateshead Gateshead 77,539 35.4 24.7% Gillingham and Rainham Gillingham and Rainham 75,283 47.4 9.3% Gloucester Gloucester 73,368 35 25.7% Goole Brigg and Goole 75,259 806.3 96.3% Gosport Gosport 72,357 38.9 0.0% Grantham and Stamford Grantham and Stamford 77,156 649.7 2.1% Gravesham Gravesham 76,583 110.3 17.6% Great Yarmouth Great Yarmouth 71,907 249.6 3.2% Greenwich and Deptford Greenwich and Woolwich 77,005 18.8 122.5% Grimsby North and Barton Cleethorpes 71,470 483.8 112.5% Grimsby South and Cleethorpes Cleethorpes 71,733 62.7 90.5% Proposed Index of Proposed constituency Base Consituency Electorate Area (km2) change

Guildford Guildford 74,077 188.6 0.0% Hackney Central Hackney South and Shoreditch 75,824 10.4 96.8% Hackney West and Bethnal Green Bethnal Green and Bow 75,449 8.6 104.9% Halifax Halifax 77,521 69.3 116.0% Halton Halton 75,381 64.2 6.4% Hammersmith and Fulham Hammersmith 77,725 11 97.2% Hampstead and Golders Green Hampstead and Kilburn 75,774 19.7 70.2% Harborough Harborough 73,071 142.1 16.3% Harlow Harlow 71,459 129.9 8.3% Harrogate and Knaresborough Harrogate and Knaresborough 71,868 242.8 10.1% Harrow and Stanmore Harrow West 77,624 28.8 105.3% Hartlepool and Billingham Hartlepool 77,558 123.6 49.9% Harwich and Clacton Clacton 77,007 154.6 35.4% Hastings and Rye Hastings and Rye 71,672 183.2 0.0% Havant Havant 77,739 72.9 53.3% Hayes and Harlington Hayes and Harlington 78,097 49.1 12.0% Hemel Hempstead Hemel Hempstead 73,526 94 9.9% Hendon Hendon 76,756 27.6 43.2% Henley and Thame Henley 77,517 750.7 28.5% and Hereford and South Herefordshire 77,370 840.6 13.3% Hertford and Stortford Hertford and Stortford 75,023 152.3 2.8% Hertsmere Hertsmere 74,831 103.9 7.2% Hexham and Morpeth Hexham 77,566 3343.1 44.6% High Peak High Peak 71,130 540.3 0.0% High Weald Wealden 74,102 849.2 123.3% Hillingdon and Uxbridge Uxbridge and South Ruislip 73,814 49.8 86.1% Hitchin and Harpenden Hitchin and Harpenden 73,478 256.2 0.0% Holborn and St Pancras Holborn and St Pancras 76,685 9.6 44.5% Hornchurch and Upminster Hornchurch and Upminster 78,064 57.6 0.0% Hornsey and Wood Green Hornsey and Wood Green 74,418 16.8 21.2% Horsham Horsham 73,653 333.2 4.8% Huddersfield Huddersfield 76,540 54.1 22.8% Huntingdon Huntingdon 77,715 255.2 4.4% Ilford North Ilford North 78,100 30.7 68.0% Ipswich Ipswich 73,837 34.5 4.4% Isle of Wight East Isle of Wight 53,268 154.8 49.5% Isle of Wight West Isle of Wight 52,180 240.2 50.5% Islington Islington South and Finsbury 73,470 8.3 13.2% Jarrow Jarrow 74,473 49.5 80.4% Keighley Keighley 76,636 180.5 13.7% Kenilworth and Leamington Warwick and Leamington 75,011 230.3 78.7% Kensington and Chelsea Kensington 76,454 12.4 37.9% Kenton Harrow East 73,722 17.8 98.3% Kettering Kettering 71,489 248.3 4.7% Kingston and Surbiton Kingston and Surbiton 77,995 28.4 0.0% Kingston upon Hull Central Kingston upon Hull North 71,722 29.6 81.8% Kingston upon Hull East Kingston upon Hull East 72,078 36.9 55.2% Kingston upon Hull West and Haltemprice Kingston upon Hull West and Hessle 74,211 52.4 81.3% Kingswood Kingswood 73,384 114.8 8.6% Knowsley Knowsley 77,916 54.2 0.0% Lancaster and Morecambe Morecambe and Lunesdale 74,361 126.4 59.0% Leeds Central Leeds Central 77,012 44.7 41.3% Leeds East Leeds East 76,213 42.4 21.7% Leeds North East Leeds North East 74,883 41.6 13.6% Leeds North West Leeds North West 77,244 77.2 71.0% Leicester East Leicester East 75,755 23.3 0.0% Leicester South Leicester South 72,227 21.2 0.0% Leicester West Leicester West 74,743 33.9 19.0% Leigh Leigh 73,070 67.1 0.0% Lewes and Uckfield Lewes 77,046 697.6 98.0% Lewisham and Catford Lewisham East 72,781 17.4 73.9% Leytonstone and Wanstead Leyton and Wanstead 73,833 20.2 118.8% Lichfield Lichfield 74,778 347.8 11.2% Lincoln Lincoln 73,889 61.6 29.7% Proposed Index of Proposed constituency Base Consituency Electorate Area (km2) change

Littleborough and Saddleworth Rochdale 75,203 157.9 103.5% Liverpool Riverside Liverpool, Riverside 77,665 36.9 39.6% Liverpool Wavertree Liverpool, Wavertree 76,261 21.8 30.1% Liverpool West Derby Liverpool, West Derby 73,950 26.9 50.1% Loughborough and Rushcliffe South Loughborough 73,074 194 48.9% Louth and Horncastle Louth and Horncastle 75,022 1411.3 0.5% Ludlow and Leominster Ludlow 77,533 2122.3 97.8% Luton North and Houghton Luton North 71,188 29.6 26.7% Luton South Luton South 71,881 83.7 12.1% Macclesfield Macclesfield 73,696 322.7 52.2% Maidenhead Maidenhead 71,834 183.4 0.0% Maidstone Maidstone and The Weald 71,284 79.5 73.4% Makerfield Makerfield 71,857 55.9 0.0% Malvern and Ledbury West Worcestershire 78,172 978.5 46.3% Manchester Central Manchester Central 76,173 25.4 12.8% Manchester Gorton Manchester, Gorton 74,227 17.3 0.0% Manchester Withington Manchester, Withington 74,616 19.3 0.0% Mansfield Mansfield 74,066 76.7 0.0% Marple and Hyde Hazel Grove 74,907 78.2 90.9% Merton and Wimbledon Central Wimbledon 77,100 19.8 61.3% Mid Bedfordshire Mid Bedfordshire 71,365 320.5 37.4% Mid Norfolk Mid Norfolk 72,791 941.9 29.2% Mid Sussex Mid Sussex 77,031 148.4 2.7% Middlesbrough North East and Redcar Redcar 78,214 80.2 69.3% Middlesbrough South and East Cleveland Middlesbrough South and East Cleveland 75,590 203.3 43.8% Middlesbrough West and Stockton East Stockton South 78,071 59.7 116.9% Milton Keynes Bletchley Milton Keynes South 74,374 45 51.1% Milton Keynes Newport Pagnell Milton Keynes North 78,294 243.5 56.0% Mole Valley Mole Valley 73,419 376.1 10.8% New Forest East New Forest East 72,520 462.9 14.4% New Forest West New Forest West 71,289 400.4 6.6% Newark Newark 75,646 712 22.1% Newbury Newbury 76,793 562.7 2.7% Newcastle upon Tyne East Newcastle upon Tyne East 76,406 28.5 30.8% Newcastle upon Tyne North West Newcastle upon Tyne North 71,279 149.6 92.5% Newcastle-under-Lyme Newcastle-under-Lyme 73,174 58.3 39.7% Newton Abbot Newton Abbot 71,099 256.6 24.8% Normanton, Castleford and Outwood Normanton, Pontefract and Castleford 71,277 80.4 74.1% North Devon North Devon 73,240 1105 0.0% North Durham and Chester-le-Street North Durham 71,773 130.3 10.7% North East Bedfordshire North East Bedfordshire 74,198 552.9 15.3% North East Cambridgeshire North East Cambridgeshire 75,727 651.5 7.4% North East Essex Harwich and North Essex 77,674 506.8 67.0% North East Hampshire North East Hampshire 71,949 349.3 60.1% North East Hertfordshire North East Hertfordshire 74,449 509.8 23.6% North East Somerset North East Somerset 73,006 439.6 43.5% North Kent Coastal North Thanet 75,023 167.6 66.2% North Lancashire Wyre and Preston North 71,284 1364.6 130.2% North Norfolk North Norfolk 71,657 794.4 11.7% North Shropshire North Shropshire 77,768 935.2 0.0% North Somerset North Somerset 75,979 232.1 0.0% North Swindon North Swindon 76,254 105.5 6.6% North Tyneside North Tyneside 76,427 45.4 0.0% North Warwickshire North Warwickshire 74,124 302.5 10.2% North West Cambridgeshire North West Cambridgeshire 78,279 714.5 13.0% North West Hampshire North West Hampshire 78,317 569.3 23.9% North West Leicestershire North West Leicestershire 72,394 242.9 28.0% North West Norfolk North West Norfolk 72,805 906.3 3.0% Northampton North Northampton North 72,743 31.6 29.9% Northampton South Northampton South 74,983 173.1 87.7% Norwich North Norwich North 71,192 39.9 12.1% Norwich South Norwich South 71,804 58.9 26.5% Nottingham East and Carlton Nottingham East 71,152 27.1 97.1% Nottingham North Nottingham North 73,828 23.9 50.0% Proposed Index of Proposed constituency Base Consituency Electorate Area (km2) change

Nottingham South and Beeston Nottingham South 77,434 40.9 78.3% Nuneaton Nuneaton 76,385 237.9 37.1% Old Bexley and Sidcup Old Bexley and Sidcup 72,041 27.3 12.2% Oldham Oldham West and Royton 74,240 31 93.3% Orpington Orpington 78,277 82.7 17.3% Oxford East Oxford East 76,194 33.7 8.4% Oxford West and Abingdon Oxford West and Abingdon 75,606 189.1 20.8% Peckham and Lewisham West Camberwell and Peckham 77,356 13.5 123.4% Penrith and Solway Penrith and The Border 72,284 2823.7 93.8% Peterborough Peterborough 77,607 179.4 9.9% Plymouth North Plymouth, Moor View 75,751 37.3 14.9% Plymouth South Plymouth, Sutton and Devonport 78,406 35.9 42.2% Pontefract Hemsworth 71,246 197.5 97.0% Poole Poole 74,927 42.7 27.8% Poplar and Limehouse Poplar and Limehouse 74,863 11.9 56.4% Portsmouth North Portsmouth North 75,213 44.6 34.5% Portsmouth South Portsmouth South 74,253 21.7 15.0% Preston Preston 77,324 38.3 38.6% Prestwich and Middleton Bury South 76,824 45.9 99.7% Pudsey Pudsey 75,178 49.7 110.0% Queen's Park and Regent's Park Westminster North 72,664 9.8 39.6% Rayleigh Woodham Ferrers Rayleigh and Wickford 73,182 153.7 65.5% Reading East Reading East 72,024 29.2 13.2% Reading West Reading West 72,101 52.3 3.4% Redditch Redditch 77,756 151.4 35.6% Reigate Reigate 71,778 111.8 0.0% Richmond (Yorks) Richmond (Yorks) 72,129 1939.7 6.8% Richmond Park Richmond Park 74,740 38.2 0.0% Rochdale Heywood and Middleton 73,781 68.9 98.2% Rochester and Strood Rochester and Strood 78,455 227.3 4.2% Rochford and Southend East Rochford and Southend East 72,970 262.1 4.9% Romford Romford 78,179 32.8 10.2% Rossendale and Darwen Rossendale and Darwen 74,991 232.2 17.7% Rother Valley Rother Valley 71,519 137.2 74.9% Rotherham Rotherham 72,571 70.5 104.3% Rugby and Southam Rugby 77,230 418.5 63.9% Ruislip, Northwood and Pinner Ruislip, Northwood and Pinner 74,037 30.3 64.1% Runnymede and Weybridge Runnymede and Weybridge 71,724 91.2 13.6% Rutland and Melton Rutland and Melton 73,653 1129.1 13.5% Saffron Walden Saffron Walden 72,780 811.1 36.0% Salford and Eccles Salford and Eccles 74,161 31.7 0.0% Salisbury Salisbury 77,247 734.3 13.5% Scarborough and Whitby Scarborough and Whitby 75,963 752.5 7.4% Scunthorpe 71,820 297.1 18.9% Sefton Central Sefton Central 76,378 101.4 15.4% Selby and Ainsty Selby and Ainsty 73,217 835.7 12.9% Sevenoaks Sevenoaks 74,878 345.1 21.1% Sheffield Central and West Sheffield Central 71,698 24.6 81.8% Sheffield East Sheffield South East 77,371 49 132.3% Sheffield Hallam and Stocksbridge Sheffield, Hallam 77,540 309.7 94.4% Sheffield North and Ecclesfield Sheffield, Brightside and Hillsborough 77,875 45.4 95.3% Sheffield South Sheffield, Heeley 77,795 28.7 98.7% Sherwood Sherwood 76,298 298.8 101.5% Shipley Shipley 77,910 99.4 38.9% Shirley and Solihull South Solihull 77,174 86 53.3% Shrewsbury 77,830 723.7 3.0% Sittingbourne and Sheppey Sittingbourne and Sheppey 75,638 284.3 0.0% Skipton and Ripon Skipton and Ripon 71,753 1928.4 3.4% Sleaford Sleaford and North Hykeham 74,561 1025.1 32.0% Slough Slough 71,317 24.9 7.0% Somerton and Frome Somerton and Frome 72,417 873.7 6.9% South Basildon and East Thurrock South Basildon and East Thurrock 77,670 169.8 60.1% South Cambridgeshire South Cambridgeshire 77,288 636.8 31.6% South Derbyshire South Derbyshire 77,920 299.9 23.7% Proposed Index of Proposed constituency Base Consituency Electorate Area (km2) change

South Dorset South Dorset 77,608 494.3 14.3% South East Cambridgeshire South East Cambridgeshire 77,018 722.7 18.2% South East Cornwall South East Cornwall 71,138 921.8 9.9% South Holland and The Deepings South Holland and The Deepings 74,332 844.3 0.0% South Leicestershire South Leicestershire 71,583 232.3 48.9% South Norfolk South Norfolk 77,348 737.3 31.0% South Northamptonshire South Northamptonshire 73,443 718.7 54.8% South Ribble South Ribble 75,318 110.5 51.1% South Shields South Shields 71,143 40.1 32.7% South Staffordshire South Staffordshire 72,132 273.8 0.0% South Suffolk South Suffolk 73,959 753.5 12.3% South Swindon South Swindon 72,332 124.6 7.3% South West Bedfordshire South West Bedfordshire 77,673 204 38.3% South West Hertfordshire South West Hertfordshire 72,404 188.6 12.8% South West Norfolk South West Norfolk 71,224 1059.3 22.4% South West Surrey South West Surrey 74,494 256.3 0.0% Southall and Heston Ealing, Southall 77,237 20.8 104.4% Southampton Itchen Southampton, Itchen 75,474 27.8 12.4% Southampton Test Southampton, Test 72,705 28.6 38.0% Southend West Southend West 74,732 35.5 15.1% Southport Southport 75,828 183.8 16.5% Spelthorne Spelthorne 74,558 56.6 6.1% Spen Batley and Spen 71,107 53.5 58.8% St Albans St Albans 77,182 70.1 15.7% St Helens North St Helens North 72,060 83.8 0.0% St Helens South and Whiston St Helens South and Whiston 74,885 64.1 0.0% St Ives St Ives 73,971 637.6 18.0% Stafford Stafford 72,896 472.9 22.4% Staffordshire Moorlands Staffordshire Moorlands 78,211 575.8 34.1% Stevenage Stevenage 71,525 112.3 5.9% Stockport North and Denton Denton and Reddish 75,516 29.3 75.3% Stockport South and Cheadle Cheadle 71,841 29.2 85.5% Stockton West Stockton South 74,805 133.7 91.9% Stoke-on-Trent North Stoke-on-Trent North 77,445 41.9 54.0% Stoke-on-Trent South Stoke-on-Trent South 76,296 36 92.3% Stourbridge Stourbridge 78,320 32.7 42.2% Streatham and Mitcham Streatham 73,925 14.6 106.3% Stretford and Urmston Stretford and Urmston 76,104 38.7 32.2% Stroud Stroud 71,843 296.2 43.5% Suffolk Coastal 76,178 782.6 1.7% Sunderland Central Sunderland Central 71,232 30.6 0.0% Sunderland West Washington and Sunderland West 72,720 42.8 108.9% Surrey Heath Surrey Heath 74,975 104.5 3.4% Sutton and Cheam Sutton and Cheam 73,858 19.7 30.6% Sutton Coldfield Sutton Coldfield 73,172 57.6 0.0% Tamworth Tamworth 73,305 196.9 4.3% Taunton Deane Taunton Deane 78,187 462.5 0.0% Tavistock and Ivybridge South West Devon 72,375 913.2 63.5% Telford Telford 76,556 60.9 18.1% Test Valley Romsey and Southampton North 74,805 517.2 86.3% Tewkesbury Tewkesbury 71,957 317.8 19.9% Thanet East South Thanet 78,130 42.5 43.3% The Cotswolds The Cotswolds 74,694 1199.5 15.8% Thirsk and Malton Thirsk and Malton 73,125 2270.9 14.1% Thurrock Thurrock 75,935 75 0.0% Tiverton and Honiton Tiverton and Honiton 75,818 904.7 0.0% Tonbridge and The Weald Tonbridge and Malling 71,575 381.9 103.7% Tooting Tooting 77,288 12.1 8.2% Torbay Torbay 71,459 92.1 0.0% Totnes Totnes 72,989 651 11.5% Tottenham Tottenham 74,648 14.2 12.0% Trowbridge Chippenham 74,439 262.2 93.0% Truro and Newquay Truro and Falmouth 73,799 590.8 85.1% Tunbridge Wells Tunbridge Wells 73,871 250.9 28.1% Proposed Index of Proposed constituency Base Consituency Electorate Area (km2) change

Twickenham Twickenham 78,247 29.5 0.0% Tynemouth Tynemouth 74,618 39.8 0.0% Wakefield Wakefield 76,312 85.9 14.7% Wallasey Wallasey 76,052 44 18.9% Walsall Central Walsall South 73,172 34.1 40.9% Walthamstow Walthamstow 76,575 17.3 70.6% Wantage Wantage 75,312 580.2 8.8% Warley Warley 72,780 23.6 102.0% Warminster and South 76,920 1053.8 90.1% Warrington North Warrington North 76,183 93.9 8.8% Warrington South Warrington South 76,806 88.5 7.4% Warwick and Stratford-on-Avon Stratford-on-Avon 77,284 396.9 69.9% Watford Watford 72,878 26.8 27.6% Waveney Waveney 77,408 251.5 0.0% Weaver Vale Weaver Vale 73,327 480.3 92.5% Wednesfield and Willenhall Wolverhampton North East 77,139 30.6 87.3% Wellingborough Wellingborough 71,501 92.8 21.5% Wells Wells 71,669 507.6 23.9% Welwyn Hatfield Welwyn Hatfield 72,763 172.6 5.4% Wembley and Harrow on the Hill Brent North 77,515 20.3 84.4% Wentworth and Dearne Wentworth and Dearne 73,146 93.6 69.7% West Bridgford Rushcliffe 75,094 189.8 54.4% West Bromwich West Bromwich East 72,691 33.4 70.7% West Dorset West Dorset 73,511 1034.5 2.0% West Durham and Teesdale North West Durham 74,502 1126.5 50.0% West Gloucestershire Forest of Dean 72,354 669.9 5.5% West Lancashire West Lancashire 76,861 295.3 9.4% West Staffordshire Stone 71,078 391.1 93.9% West Suffolk West Suffolk 72,809 818.3 0.0% Westmorland and Lonsdale Westmorland and Lonsdale 72,371 2060.7 13.3% Weston-super-Mare Weston-super-Mare 75,333 158.7 0.0% Wigan Wigan 72,733 60.5 0.0% Willesden Brent Central 77,841 20.7 29.4% Wimbledon Common and Putney Putney 72,489 21.5 21.2% Winchester Winchester 76,083 586.7 76.7% Windsor Windsor 74,185 150.3 7.8% Witham and Maldon Maldon 73,939 484.2 88.7% Witney Witney 78,455 714.4 0.0% Woking Woking 72,819 106.8 15.8% Wokingham Wokingham 72,505 187.1 11.4% Wolverhampton South and Coseley Wolverhampton South East 73,652 28.4 45.1% Wolverhampton West Wolverhampton South West 77,373 31.6 54.6% Woolwich Erith and Thamesmead 74,422 20.6 101.6% Worcester Worcester 74,832 73.2 6.1% Workington and Whitehaven Copeland 77,239 599.8 78.0% Worsley and Eccles South Worsley and Eccles South 72,316 59.7 0.0% Worthing West Worthing West 74,210 32.2 1.0% Wycombe Wycombe 77,998 199 8.8% Wyre Forest Wyre Forest 77,378 213.8 2.9% Wythenshawe and Sale East Wythenshawe and Sale East 75,919 36.5 0.0% Yeovil Yeovil 76,351 401 0.0% York Central York Central 76,146 25.2 9.0% York Outer York Outer 71,218 246.8 8.5%

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