List of Parliamentary constituencies in Buckinghamshire

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The ceremonial county of Buckinghamshire, which includes the unitary authority of Milton Keynes, is divided into 7 Parliamentary constituencies – 1 Borough constituency and 6 County constituencies.


  † Conservative   ‡ Labour   ¤ Liberal Democrat   UKIP   Speaker   ♣ Green Party

Constituency[nb 1] Electorate[1] Majority[nb 2] Member of Parliament Nearest opposition Electoral wards[2][3] Map
Aylesbury CC 82,546 14,656   David Lidington   Mark Bateman‡ Aylesbury Vale District Council: Aston Clinton, Aylesbury Central, Bedgrove, Coldharbour, Elmhurst and Watermead, Gatehouse, Mandeville and Elm Farm, Oakfield, Quarrendon, Southcourt, Walton Court and Hawkslade, Wendover. Wycombe District Council: Bledlow and Bradenham, Greater Hughenden, Lacey Green, Speen and the Hampdens, Stokenchurch and Radnage.
A medium constituency stretching from the centre to the southwest of the county.
Beaconsfield CC 77,524 24,543   Dominic Grieve   James English‡ South Bucks District Council: Beaconsfield North, Beaconsfield South, Beaconsfield West, Burnham Beeches, Burnham Church, Burnham Lent Rise, Denham North, Denham South, Dorney and Burnham South, Farnham Royal, Gerrards Cross East and Denham South West, Gerrards Cross North, Gerrards Cross South, Hedgerley and Fulmer, Iver Heath, Iver Village and Richings Park, Stoke Poges, Taplow, Wexham and Iver West. Wycombe District Council: Bourne End-cum-Hedsor, Flackwell Heath and Little Marlow, Marlow North and West, Marlow South East, The Wooburns.
A medium constituency, located in the far south of the county.
Buckingham CC 79,615 25,725 John Bercow   Michael Sheppard♣ Aylesbury Vale District Council: Bierton, Brill, Buckingham North, Buckingham South, Cheddington, Edlesborough, Great Brickhill, Great Horwood, Grendon Underwood, Haddenham, Long Crendon, Luffield Abbey, Marsh Gibbon, Newton Longville, Pitstone, Quainton, Steeple Claydon, Stewkley, Tingewick, Waddesdon, Weedon, Wing, Wingrave, Winslow. Wycombe District Council: Icknield, The Risboroughs.
A large constituency, stretching from the centre to the north of the county.
Chesham and Amersham CC 71,654 22,140   Cheryl Gillan   Nina Dluzewska‡ Chiltern District Council: Amersham Common, Amersham-on-the-Hill, Amersham Town, Asheridge Vale and Lowndes, Ashley Green, Latimer and Chenies, Austenwood, Ballinger, South Heath and Chartridge, Central, Chalfont Common, Chalfont St Giles, Chesham Bois and Weedon Hill, Cholesbury, The Lee and Bellingdon, Gold Hill, Great Missenden, Hilltop and Townsend, Holmer Green, Little Chalfont, Little Missenden, Newtown, Penn and Coleshill, Prestwood and Heath End, Ridgeway, St Mary’s and Waterside, Seer Green, Vale.
A medium constituency in the southest of the county.
Milton Keynes North CC 89,207 1,915   Mark Lancaster   Charlynne Pullen‡ Milton Keynes Borough Council: Bradwell, Campbell Park, Hanslope Park, Linford North, Linford South, Middleton, Newport Pagnell North, Newport Pagnell South, Olney, Sherington, Stantonbury, Wolverton.
A medium constituency, to the far north of the county.
Milton Keynes South BC 92,417 1,725   Iain Stewart   Hannah O'Neill‡ Milton Keynes Borough Council: Bletchley and Fenny Stratford, Danesborough, Denbigh, Eaton Manor, Emerson Valley, Furzton, Loughton Park, Stony Stratford, Walton Park, Whaddon, Woughton.
A medium constituency in the north of the county.
Wycombe CC 77,087 6,578   Steve Baker   Rafiq Raja‡ Wycombe District Council: Abbey, Booker and Cressex, Bowerdean, Chiltern Rise, Disraeli, Downley and Plomer Hill, Greater Marlow, Hambleden Valley, Hazlemere North, Hazlemere South, Micklefield, Oakridge and Castlefield, Ryemead, Sands, Terriers and Amersham Hill, Totteridge, Tylers Green and Loudwater.
A small-to-medium-sized constituency, situated in the southwest of the county.

History of constituencies and boundaries[edit]

Prior to 1832[edit]

Since 1295, the Parliamentary County of Buckinghamshire along with all other English Counties regardless of size or population, had elected 2 MPs to the House of Commons in accordance with the freehold property franchise. The county also included six Parliamentary Boroughs, namely Amersham, Aylesbury, Buckingham, Chipping Wycombe, Great Marlow and Wendover, all returning 2 MPs each.


The Great Reform Act of 1832 radically changed the representation of the House of Commons, with the County's representation being increased to 3 MPs and the Boroughs of Amersham and Wendover abolished. Unusually, the contents of the Parliamentary Borough of Aylesbury were defined within the Act itself to include the "Three Hundreds of Aylesbury", which extended the seat to include Wendover and Princes Risborough.[4]

Under the Reform Act of 1867, the representation of the Boroughs of Buckingham, Chipping Wycombe and Great Marlow were reduced to 1 MP.


Under the Redistribution of Seats Act 1885, the County was divided into 3 single-member constituencies, namely the Northern or Buckingham Division, the Mid or Aylesbury Division and the Southern or Wycombe Division. The remaining Parliamentary Boroughs were all abolished and absorbed into the County Divisions which took their names, with Great Marlow being absorbed into the Wycombe Division, which also included Beaconsfield and Slough.

The table shows an approximate representation of the development of constituencies in Buckinghamshire since 1885. The text below gives a more detailed description.

1885-1945 1945-1950 1950-1974 1974-1983 1983-1992 1992-2010 2010-present
Buckingham CC Buckingham CC Buckingham CC Buckingham CC Milton Keynes CC North East

Milton Keynes CC

Milton Keynes North CC
Milton Keynes

South West BC

Milton Keynes South BC
Buckingham CC Buckingham CC Buckingham CC
Aylesbury CC Aylesbury CC Aylesbury CC Aylesbury CC Aylesbury CC Aylesbury CC Aylesbury CC
Chesham and

Amersham CC

Chesham and

Amersham CC

Chesham and

Amersham CC

Chesham and

Amersham CC

Wycombe CC Wycombe CC Wycombe CC Wycombe CC Wycombe CC Wycombe CC Wycombe CC
Eton and Slough CC South Buckinghamshire CC Beaconsfield CC Beaconsfield CC Beaconsfield CC Beaconsfield CC
Eton and Slough BC Eton and Slough BC Transferred to Berkshire (Slough BC)
BC = Borough Constituency (prior to 1950 - Parliamentary Borough or Division thereof)

CC = County Constituency (prior to 1950 - Parliamentary County of Division thereof)


Under the Representation of the People Act 1918, the three County Divisions were retained, with altered boundaries: north-eastern parts of Aylesbury, including Linslade and Wing were transferred to Buckingham; Beaconsfield and Amersham were transferred from Wycombe to Aylesbury; and Wycombe gained Eton from the abolished Parliamentary Borough of New Windsor in Berkshire.


The House of Commons (Redistribution of Seats) Act 1944 set up Boundaries Commissions to carry out periodic reviews of the distribution of parliamentary constituencies. It also authorised an initial review to subdivide abnormally large constituencies in time for the 1945 general election. This was implemented by the Redistribution of Seats Order 1945 under which Buckinghamshire was allocated an additional seat. As a consequence, the new County Constituency of Eton and Slough was formed from the Wycombe constituency, comprising the Municipal Borough of Slough, the Urban District of Eton and the parishes to the south of Beaconsfield making up the Rural District of Eton. To compensate partly for the loss of these areas, the parts of the Rural District of Wycombe not in the constituency thereof, which included Princes Risborough and Hughenden, were transferred from Aylesbury.


The Representation of the People Act 1948 increased the county's representation once again, from 4 to 5 MPs, with the creation of the County Constituency of South Buckinghamshire. This comprised Beaconsfield, Amersham and the Chalfonts, transferred from Aylesbury, and the Rural District of Eton, transferred from Eton and Slough (which was redesignated as a Borough Constituency). There were no changes for the 1950 general election under the First Periodic Review of Westminster Constituencies.


Under the Second Periodic Review, representation was increased to 6 MPs with the formation of the new County Constituencies of Beaconsfield and Chesham and Amersham, which largely replaced the abolished South Buckinghamshire constituency. Beaconsfield comprised the Urban District of Beaconsfield and the Rural District of Eton, while Chesham and Amersham combined Amersham and the Chalfonts with Chesham and the remaining, northern part of the Rural District of Amersham, transferred from Aylesbury. The northern parts of the Rural District of Wycombe, including Princes Risborough (but not Hughenden) were transferred back from Wycombe to Aylesbury. Buckingham lost Linslade which had been transferred to Bedfordshire on its amalgamation with the neighbouring Urban District of Leighton Buzzard and was now included in the constituency of South Bedfordshire.


The Third Review reflected the changes to the county of Buckinghamshire arising from the Local Government Act 1972, resulting in Eton, Slough and some surrounding areas being transferred to Berkshire. The constituency of Eton and Slough was abolished with the area constituting the Borough of Slough forming the new Borough Constituency of Slough, and the small Urban District of Eton which was absorbed into the Royal Borough of Windsor and Maidenhead being included in the County Constituency of Windsor and Maidenhead. The parishes of the Rural District of Eton also transferred to Berkshire, which included Datchet, were transferred from Beaconsfield and included in the new County Constituency of East Berkshire.

In the north of the county, the new County Constituency of Milton Keynes was formed from parts of the Buckingham constituency. This reflected the growth of the new town of Milton Keynes since its foundation in 1967. The new constituency comprised the Borough of Milton Keynes, with the exception of Stony Stratford and Wolverton, which were retained in Buckingham. In turn, Buckingham gained north-western parts of the Aylesbury constituency.

Elsewhere, Great Missenden was transferred from Chesham and Amersham to Aylesbury, Hazlemere from Wycombe to Chesham and Amersham and areas to the east of High Wycombe from Wycombe to Beaconsfield.


Uniquely outside the normal cycle of periodic reviews by the Boundaries Commission, the constituency of Milton Keynes, due to its rapid growth, was split into two separate constituencies for the 1992 general election: the County Constituency of North East Milton Keynes and the Borough Constituency of Milton Keynes South West. Stony Stratford and Wolverton were transferred from Buckingham and included in Milton Keynes South West.[5]


The Fourth Review saw only minor changes to the Buckinghamshire constituencies, included the transfer of the District of Aylesbury Vale ward of Aston Clinton from Aylesbury to Buckingham.


In the Fifth Review the Boundary Commission for England proposed changes to realign constituency boundaries with the boundaries of current local government wards, and to reduce the electoral disparity between constituencies. The changes included the return of Great Missenden to Chesham and Amersham, Hazlemere to Wycombe and Aston Clinton to Buckingham. In addition, Marlow was transferred from Wycombe to Beaconsfield and Princes Risborough from Aylesbury to Buckingham. The boundary between the two Milton Keynes constituencies was realigned and they were renamed as Milton Keynes North and Milton Keynes South.

Name Pre-2010 boundaries
  1. Aylesbury CC
  2. Beaconsfield CC
  3. Buckingham CC
  4. Chesham and Amersham CC
  5. Milton Keynes South West BC
  6. Milton Keynes North East CC
  7. Wycombe CC
Parliamentary constituencies in Buckinghamshire
Revised name Post-2010 boundaries
  1. Aylesbury CC
  2. Beaconsfield CC
  3. Buckingham CC
  4. Chesham and Amersham CC
  5. Milton Keynes North CC
  6. Milton Keynes South BC
  7. Wycombe CC
Proposed Revised constituencies in Buckinghamshire

Changes proposed for 2022[edit]

The Boundary Commission for England submitted their final proposals in respect of the Sixth Periodic Review of Westminster Constituencies (the 2018 review) in September 2018. If these proposals are approved by Parliament they will come into effect at the next UK general election which is due to take place in May 2022 under the terms of the Fixed-term Parliaments Act 2011.

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. The review was carried out using the official UK electorate figures for 2015 and the electoral quota was set at 74,769, establishing a range of 71,031 to 78,507.[6]

In order to meet these requirements, the Commission was able to treat Buckinghamshire (including the unitary authority of Milton Keynes) as a sub-region of the South East Region and recommended that the county retained seven seats, one of which (Beaconsfield) was unchanged. The constituency of Aylesbury would be moved northwards, gaining south-eastern parts of Buckingham, including Wing. South-eastern areas, including Stokenchurch, would be transferred to Wycombe and south-western areas, including Greater Hughenden, to Chesham and Amersham.[6]

It was proposed that Buckingham regain the parts of the Borough of Milton Keynes it had lost in 1992 - Wolverton from Milton Keynes North and Stony Stratford from Milton Keynes South and, consequently, be renamed Buckingham and Milton Keynes West. The boundary between the two Milton Keynes constituencies would be realigned once again, with Bradwell and Stantonbury being transferred from North to South, and south-eastern parts of the Borough moving in the opposite direction. Milton Keynes North would be renamed Milton Keynes North East.[6]

Current constituencies Electorate[7] Proposed constituencies[8] Electorate[8]
Aylesbury CC 77,463 Aylesbury CC 77,715
Beaconsfield CC 73,984 Beaconsfield CC 73,984
Buckingham CC 74,882 Buckingham and Milton Keynes West CC 77,080
Chesham and Amersham CC 68,560 Chesham and Amersham CC 77,089
Milton Keynes North CC 83,348 Milton Keynes North East CC 78,294
Milton Keynes South BC 86,585 Milton Keynes South BC 74,374
Wycombe CC 71,712 Wycombe CC 77,998
536,534 536,534


The total number of aggregate votes cast for each political party or individuals which fielded candidates in constituencies which comprise Buckinghamshire in the 2017 general election was as follows;[9]

Party Votes Votes% Seats
Conservatives 190,111 47.0 6
Labour 118,514 29.3
The Speaker 34,299 8.5 1
Liberal Democrats 25,828 6.4
Greens 16,335 4.0
UKIP 13,031 3.2
Independents 6,258 1.6
Christian Peoples Alliance 169 0.0
Total 404,545 100.0 7

Historical representation by party[edit]

A cell marked → (with a different colour background to the preceding cell) indicates that the previous MP continued to sit under a new party name.

1885 to 1945[edit]

  Conservative   Liberal   Liberal Unionist

Constituency 1885 1886 89 91 1892 1895 99 1900 1906 Jan 10 Dec 10 12 14 1918 1922 1923 1924 1929 1931 1935 37 38 43
Aylesbury F. de Rothschild W. de Rothschild L. de Rothschild Keens Burgoyne Beaumont Reed
Buckingham E. Verney Hubbard E. Verney Leon Carlile F. Verney H. Verney Bowyer Whiteley Berry
Wycombe Curzon Grenfell Herbert Cripps du Pré Woodhouse Knox

1945 to present[edit]

  Conservative   Labour   Speaker

Constituency 1945 1950 1951 52 1955 1959 1964 1966 1970 Feb 1974 Oct 1974 78 1979 82 1983 1987 1992 1997 2001 2005 09 2010 2015 2017
Eton and Slough Levy Brockway Meyer Lestor moved to Berkshire
Aylesbury Reed Summers Raison Lidington
Buckingham Crawley Markham Maxwell Benyon Walden Bercow
Wycombe Haire Astor Hall Whitney Goodman Baker
Buckinghamshire South / Beaconsfield (1974) Bell Smith Grieve
Chesham and Amersham Gilmour Gillan
Milton Keynes / NE Milton Keynes (1992) / MK North (2010) Benyon Butler White Lancaster
Milton Keynes SW / Milton Keynes S (2010) Legg Starkey Stewart

See also[edit]


  1. ^ BC denotes borough constituency, CC denotes county constituency.
  2. ^ The majority is the number of votes the winning candidate receives more than their nearest rival.


  1. ^ "2017 Electorates".
  2. ^ "The Parliamentary Constituencies (England) Order 2007, page 4". Office of Public Sector Information. Crown copyright. 13 June 2007. Retrieved 7 November 2009.
  3. ^ Boundary Commission for England pp. 1004–1007
  4. ^ "H.M.S.O. Boundary Commission Report 1868, Aylesbury". Retrieved 2019-02-09.
  5. ^ "The Parliamentary Constituencies (England) (Miscellaneous Changes) Order 1990". Retrieved 2019-02-10.
  6. ^ a b c Boundary Commission for England, 2018 Review, Associated consultation documents (September 2018). "Final recommendations report".CS1 maint: Multiple names: authors list (link)
  7. ^ Boundary Commission for England, 2018 Review, Associated consultation documents (Document type: Electoral data) (24 February 2016). "The electorate of each region subdivided by both local authorities and each existing constituency".CS1 maint: Multiple names: authors list (link)
  8. ^ a b Boundary Commission for England, 2018 Review, Associated consultation documents (September 2018). "Final recommendations constituency list (with wards)".CS1 maint: Multiple names: authors list (link)
  9. ^ "2010 Electorates".