List of parliamentary constituencies in Buckinghamshire

The ceremonial county of Buckinghamshire, which includes the unitary authorities of Buckinghamshire and the City of Milton Keynes, is divided into 8 parliamentary constituencies – 1 borough constituency and 7 county constituencies. At the 2024 general election, the county returned 5 Labour MPs, 2 Conservatives and 1 Liberal Democrat.^[1]

  Conservative †   Labour ‡   Liberal Democrat ¤

Constituency[nb 1]	Electorate[2]	Majority[1][nb 2]	Member of Parliament[1]		Nearest opposition[1]		Map
Aylesbury CC	75,636	630		Laura Kyrke-Smith ‡		Rob Butler †
Beaconsfield CC	72,315	5,455		Joy Morrissey †		Anna Crabtree ¤
Buckingham and Bletchley CC	73,644	2,421		Callum Anderson ‡		Iain Stewart †
Chesham and Amersham CC	74,155	5,451		Sarah Green ¤		Gareth Williams †
Mid Buckinghamshire CC	72,240	6,872		Greg Smith †		Anja Schaefer ¤
Milton Keynes Central BC	76,708	7,291		Emily Darlington ‡		Johnny Luk †
Milton Keynes North CC	70,620	5,430		Chris Curtis ‡		Ben Everitt †
Wycombe CC	71,769	4,591		Emma Reynolds ‡		Steve Baker †

For the 2023 Periodic Review of Westminster constituencies, which redrew the constituency map ahead of the 2024 United Kingdom general election, the Boundary Commission for England proposed that the number of seats in the combined area of Buckinghamshire and Milton Keynes be increased from seven to eight with the creation of a new cross-authority constituency named Buckingham and Bletchley. This led to significant changes elsewhere, with Milton Keynes Central replacing Milton Keynes South and Mid Buckinghamshire replacing the existing Buckingham seat.^[3][4] These changes came into effect for the 2024 general election.

Former name	Boundaries 2010–2024	Current name	Boundaries 2024–present
Aylesbury CC Beaconsfield CC Buckingham CC Chesham and Amersham CC Milton Keynes North CC Milton Keynes South BC Wycombe CC		Aylesbury CC Beaconsfield CC Buckingham and Bletchley CC Chesham and Amersham CC Mid Buckinghamshire CC Milton Keynes Central BC Milton Keynes North CC Wycombe CC

Under the Fifth Periodic Review of Westminster constituencies, the Boundary Commission for England^[5] decided to retain Buckinghamshire's constituencies for the 2010 election, making minor 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.

Former name	Boundaries 1997-2010	Current name	Boundaries 2010–2024
Aylesbury CC Beaconsfield CC Buckingham CC Chesham and Amersham CC Milton Keynes South West BC Milton Keynes North East CC Wycombe CC		Aylesbury CC Beaconsfield CC Buckingham CC Chesham and Amersham CC Milton Keynes North CC Milton Keynes South BC Wycombe CC

Primary data source: House of Commons research briefing - General election results from 1918 to 2019^[6]

The number of votes cast for each political party who fielded candidates in constituencies comprising Buckinghamshire in the 2024 general election were as follows:^[1]

Party	Votes	%	Change from 2019	Seats	Change from 2019
Conservative	126,497	32.2%	20.5%	2	5
Labour	108,134	27.5%	2.1%	5	5
Liberal Democrats	79,011	20.1%	6.4%	1	1
Reform UK	49,683	12.6%	12.3%	0	0
Greens	20,433	5.2%	2.3%	0	0
Others	4,972	1.3%	3.7%	0	0
Workers Party	4,326	1.1%	New	0	New
Total	393,056	100.0		8

The number of votes cast for each political party who fielded candidates in constituencies comprising Buckinghamshire in the 2019 general election were as follows:

Party	Votes	%	Change from 2017	Seats	Change from 2017
Conservative	220,814	52.7%	5.7%	7	1
Labour	106,226	25.4%	3.9%	0	0
Liberal Democrats	57,554	13.7%	7.3%	0	0
Greens	12,349	2.9%	1.1%	0	0
Brexit	1,286	0.3%	new	0	0
Others	20,664	5.0%	8.3%	0	1
Total	418,893	100.0		7

Note that before 1983 Buckinghamshire included the Eton and Slough areas of what is now Berkshire.

¹pre-1979: Liberal Party; 1983 & 1987 - SDP-Liberal Alliance

²2019: Standing as the Brexit Party.

³Standing in Buckingham, unopposed by the 3 main parties.

⁴Including Workers Party of Britain.

* Included in Other

Accurate vote percentages for the 1918 election cannot be obtained because some candidates stood unopposed.

¹John Bercow

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  1885
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  1886
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  1892
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  1895
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  1900
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  1906
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  1918
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  1922
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  1924
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  1935
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  1945

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  1950
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  1955
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  Feb 1974
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  1983
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  1997
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  2005
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  2010
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  2015
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  2017
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  2019
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  2024

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.

  Conservative   Liberal   Liberal Unionist

  Conservative   Labour

  Conservative   Independent   Labour   Speaker   Liberal Democrats

• List of parliamentary constituencies in the South East (region)
• History of parliamentary constituencies and boundaries in Buckinghamshire