# 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.

## Constituencies

Conservative †  Labour ‡  Liberal Democrat ¤
| Constituency | Electorate | Majority | Member of Parliament | Nearest opposition |
| 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 † |

## Boundary changes
### 2024

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. 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 | Parliamentary constituencies in Buckinghamshire (2010-2024) | 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 | Proposed Revised constituencies in Buckinghamshire (2024-present) |

### 2010

Under the Fifth Periodic Review of Westminster constituencies, the Boundary Commission for England 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 | Parliamentary constituencies in Buckinghamshire (1997-2010) | Aylesbury CC Beaconsfield CC Buckingham CC Chesham and Amersham CC Milton Keynes North CC Milton Keynes South BC Wycombe CC | Proposed Revised constituencies in Buckinghamshire (2010-2024) |

## Results history

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

### 2024

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

### 2019

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 | |

### Percentage votes

Note that before 1983 Buckinghamshire included the Eton and Slough areas of what is now Berkshire.
| Election year | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 | 1974 (F) | 1974 (O) | 1979 | 1983 | 1987 | 1992 | 1997 | 2001 | 2005 | 2010 | 2015 | 2017 | 2019 | 2024 |
| Conservative | 50.2 | 47.0 | 54.3 | 47.1 | 72.3 | 60.6 | 43.4 | 45.2 | 54.3 | 53.9 | 52.5 | 48.8 | 47.1 | 52.5 | 44.3 | 44.4 | 55.0 | 56.8 | 57.0 | 57.0 | 43.7 | 45.1 | 47.8 | 44.3 | 45.5 | 47.0 | 52.7 | 32.2 |
| Labour | 13.8 | 19.6 | 16.3 | 19.7 | 20.9 | 29.1 | 43.8 | 39.7 | 45.7 | 40.4 | 35.4 | 36.0 | 39.7 | 35.9 | 29.7 | 32.0 | 27.4 | 14.4 | 15.5 | 19.2 | 30.6 | 30.9 | 25.9 | 15.5 | 18.1 | 29.3 | 25.4 | 27.5 |
| Liberal Democrat$^1$ | 36.1 | 33.4 | 29.4 | 33.1 | 6.8 | 10.3 | 12.7 | 14.7 | - | 5.7 | 12.1 | 15.2 | 13.2 | 11.7 | 25.4 | 22.5 | 15.9 | 28.5 | 27.0 | 22.1 | 21.2 | 19.9 | 21.2 | 20.9 | 6.5 | 6.4 | 13.7 | 20.1 |
| Reform UK$^2$ | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0.3 | 12.6 |
| Green Party | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | * | * | * | * | * | 0.8 | 5.7 | 4.0 | 2.9 | 5.2 |
| UKIP | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | * | * | * | 6.2 | 14.9 | 3.2 | * | - |
| The Speaker$^3$ | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 6.3 | 9.0 | 8.5 | - | - |
| Other | - | - | - | - | - | - | - | 0.4 | - | - | - | - | - | - | 0.6 | 1.1 | 1.7 | 0.4 | 0.5 | 1.8 | 4.5 | 4.0 | 5.0 | 5.9 | 0.3 | 1.6 | 5.0 | 2.4$^4$ |
$^1$pre-1979: Liberal Party; 1983 & 1987 - SDP-Liberal Alliance
$^2$2019: Standing as the Brexit Party.
$^3$Standing in Buckingham, unopposed by the 3 main parties.
$^4$Including Workers Party of Britain.
* Included in Other
Accurate vote percentages for the 1918 election cannot be obtained because some candidates stood unopposed.

### Seats

| Election year | 1983 | 1987 | 1992 | 1997 | 2001 | 2005 | 2010 | 2015 | 2017 | 2019 | 2024 |
| Labour | 0 | 0 | 0 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 5 |
| Conservative | 6 | 6 | 7 | 5 | 5 | 6 | 6 | 6 | 6 | 7 | 2 |
| Liberal Democrats | 0 | 0 | 0 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 1 |
| The Speaker$^1$ | - | - | - | - | - | - | 1 | 1 | 1 | - | - |
| Total | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 |
$^1$John Bercow

### Maps
#### 1885-1910

* 1885
* 1886
* 1892
* 1895
* 1900
* 1906
* Jan 1910
* Dec 1910

#### 1918-1945

* 1918
* 1922
* 1923
* 1924
* 1929
* 1931
* 1935
* 1945

#### 1950-1979

* 1950
* 1951
* 1955
* 1959
* 1964
* 1966
* 1970
* Feb 1974
* Oct 1974
* 1979

#### 1983-present

* 1983
* 1987
* 1992
* 1997
* 2001
* 2005
* 2010
* 2015
* 2017
* 2019
* 2024

## Historical representation by party

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

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 | W. de Rothschild | W. de Rothschild | L. de Rothschild | L. de Rothschild | → | → | → | → | Keens | Burgoyne | Beaumont | Beaumont | Beaumont | Beaumont | Reed | Reed |
| Buckingham | E. Verney | Hubbard | E. Verney | Leon | Leon | Carlile | Carlile | Carlile | F. Verney | H. Verney | H. Verney | H. Verney | H. Verney | Bowyer | Bowyer | Bowyer | Bowyer | Bowyer | Bowyer | Bowyer | Whiteley | Whiteley | Berry |
| Wycombe | Curzon | Curzon | Curzon | Curzon | Curzon | Curzon | Curzon | Grenfell | Herbert | Cripps | Cripps | Cripps | du Pré | du Pré | du Pré | Woodhouse | Knox | Knox | Knox | Knox | Knox | Knox | Knox |

### 1945 to 1983

Conservative  Labour
| Constituency | 1945 | 1950 | 1951 | 52 | 1955 | 1959 | 1964 | 1966 | 1970 | Feb 1974 | Oct 1974 | 78 | 1979 | 82 |
| Eton and Slough | Levy | Brockway | Brockway | Brockway | Brockway | Brockway | Meyer | Lestor | Lestor | Lestor | Lestor | Lestor | Lestor | Lestor |
| Aylesbury | Reed | Summers | Summers | Summers | Summers | Summers | Summers | Summers | Raison | Raison | Raison | Raison | Raison | Raison |
| Buckingham | Crawley | Crawley | Markham | Markham | Markham | Markham | Maxwell | Maxwell | Benyon | Benyon | Benyon | Benyon | Benyon | Benyon |
| Wycombe | Haire | Haire | Astor | Hall | Hall | Hall | Hall | Hall | Hall | Hall | Hall | Whitney | Whitney | Whitney |
| Buckinghamshire South / Beaconsfield (1974) | | Bell | Bell | Bell | Bell | Bell | Bell | Bell | Bell | Bell | Bell | Bell | Bell | Smith |
| Chesham and Amersham | | | | | | | | | | Gilmour | Gilmour | Gilmour | Gilmour | Gilmour |

### 1983 to present

Conservative  Independent  Labour  Speaker  Liberal Democrats
| Constituency | 1983 | 1987 | 1992 | 1997 | 2001 | 2005 | 09 | 2010 | 2015 | 2017 | 19 | 2019 | 21 | 2024 |
| Aylesbury | Raison | Raison | Lidington | Lidington | Lidington | Lidington | Lidington | Lidington | Lidington | Lidington | Lidington | Butler | Butler | Kyrke-Smith |
| Buckingham / Mid Buckinghamshire (2024) | Walden | Walden | Walden | Bercow | Bercow | Bercow | → | → | → | → | → | G. Smith | G. Smith | G. Smith |
| Wycombe | Whitney | Whitney | Whitney | Whitney | Goodman | Goodman | Goodman | Baker | Baker | Baker | Baker | Baker | Baker | Reynolds |
| Beaconsfield | T. Smith | T. Smith | T. Smith | Grieve | Grieve | Grieve | Grieve | Grieve | Grieve | Grieve | → | Morrissey | Morrissey | Morrissey |
| Chesham and Amersham | Gilmour | Gilmour | Gillan | Gillan | Gillan | Gillan | Gillan | Gillan | Gillan | Gillan | Gillan | Gillan | Green | Green |
| Milton Keynes / NE MK ('92) / MK North ('10) | Benyon | Benyon | Butler | White | White | Lancaster | Lancaster | Lancaster | Lancaster | Lancaster | Lancaster | Everitt | Everitt | Curtis |
| Milton Keynes SW / MK S ('10) / MK Central ('24) | | | Legg | Starkey | Starkey | Starkey | Starkey | Stewart | Stewart | Stewart | Stewart | Stewart | Stewart | Darlington |
| Buckingham and Bletchley | | | | | | | | | | | | | | Anderson |