List of parliamentary constituencies in Berkshire

The ceremonial county of Berkshire (which is entirely made up of unitary authorities – Bracknell Forest, Reading, Slough, West Berkshire, Windsor and Maidenhead and Wokingham) is divided into nine parliamentary constituencies: three borough constituencies and six county constituencies.

2024 boundary changes
See 2023 Periodic Review of Westminster constituencies for further details.

Following the abandonment of the Sixth Periodic Review (the 2018 review), the Boundary Commission for England formally launched the 2023 Review on 5 January 2021. Initial proposals were published on 8 June 2021 and, following two periods of public consultation, revised proposals were published on 8 November 2022. The final proposals were published on 28 June 2023.

The commission has proposed that Berkshire be combined with Hampshire and Surrey as a sub-region of the South East Region. As a result, Windsor now includes Englefield Green in the Surrey borough of Runnymede. The two Reading constituencies (East and West) would be abolished and revert to a single constituency (Reading Central), with two new constituencies created, named Earley and Woodley, and Reading West and Mid Berkshire.

The following constituencies are proposed:

Containing electoral wards from Bracknell Forest


 * Bracknell
 * Maidenhead (part)

Containing electoral wards from Reading


 * Earley and Woodley (part)
 * Reading West and Mid Berkshire (part)
 * Reading Central

Containing electoral wards from Slough


 * Slough
 * Windsor (part)1

Containing electoral wards from West Berkshire


 * Reading West and Mid Berkshire (part)
 * Newbury

Containing electoral wards from Windsor and Maidenhead


 * Maidenhead (part)
 * Windsor (part)1

Containing electoral wards from Wokingham


 * Earley and Woodley (part)
 * Wokingham

1also includes part in the Surrey borough of Runnymede

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

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

Percentage votes
Note that before 1983 Berkshire additionally covered the southern part of what is now Oxfordshire, and the Eton and Slough areas which now form part of Berkshire were part of Buckinghamshire. 1pre-1979: Liberal Party; 1983 & 1987 - SDP-Liberal Alliance

* Included in Other

Accurate vote percentages for the 1918, 1931 and 1935 elections are unavailable because some candidates were elected unopposed.

Seats
11983 & 1987 - SDP-Liberal Alliance

1983 to present
1from 2024 this includes areas of Surrey