Parliamentary constituencies in South East England

2023 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. The Commission calculated that the number of seats to be allocated to the South East region would be increased by 7 from 84 to 91. This includes the Isle of Wight which will have two protected seats, compared to one at present. 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.

Under proposals, the following constituencies for the region came into effect at the 2024 general election:

2024 results

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

Results history

Primary data source: House of Commons research briefing - General election results from 1918 to 2019 (2024 as above)

Percentage votes

Key:

• CON - Conservative Party, including National Liberal Party up to 1966
• LAB - Labour Party, including Labour and Co-operative Party
• LIB - Liberal Party up to 1979; SDP-Liberal Alliance 1983 & 1987; Liberal Democrats from 1992
• UKIP - UK Independence Party 2010 to 2017 (included in Other up to 2005 and from 2019)
• REF - Reform UK (Brexit Party in 2019)
• GRN - Green Party of England and Wales (included in Other up to 2005)

Seats

Key:

• CON - Conservative Party, including National Liberal Party up to 1966 (2010-2017 - includes The Speaker, John Bercow)
• LAB - Labour Party, including Labour and Co-operative Party
• LIB - Liberal Party up to 1979; SDP-Liberal Alliance 1983 & 1987; Liberal Democrats from 1992
• GRN - Green Party of England and Wales
• OTH - 2010-2017 - Speaker (John Bercow)