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Hayes and Harlington

Constituency

West London. About 141,145 people (mid-2024 estimate) in 45 square kilometres.

MP for Hayes and Harlington

John McDonnellLabourMP since

They won by 12,031 votes on a 51.5% turnout.

As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

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Radon Affected Area by constituency

Worked out by Open Index · 2022

Under 1%90% or more

About 0% of people in Hayes and Harlington live in a 1 km square that the radon atlas marks as a radon Affected Area.

Majority, 2024 general election
31.4%
Joint 82nd largest majority of 650
House of Commons Library · Jul 2024
Turnout, 2024 general election
51.5%
Joint 81st lowest turnout of 650
House of Commons Library · Jul 2024
Population
126,416
26th most populated of 650
ONS Census 2021 · 2021
People in radon Affected Area squares
0%
UK 44%
Worked out by Open Index

2024 general election result

Candidates in Hayes and Harlington at the general election on 4 July 2024, in finishing order
CandidatePartyVotesShare
John McDonnellElectedLabour20,40553.3%
Dylan ThomasConservative8,37421.9%
Francoise ThompsonReform UK4,11410.7%
Christine WestGreen Party2,1315.6%
Rizwana KarimWorkers Party of Britain1,9755.2%
Alexander CunliffeLiberal Democrat1,3163.4%
Electorate
74,405
Turnout
51.5%
Majority
12,031 (31.4%)
Valid votes
38,315
Rejected ballots
118

Polling day . Shares are of valid votes; turnout is valid votes as a share of the electorate. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: House of Commons Library, UK Parliament election results. The result from the House of Commons Library

How Hayes and Harlington compares

Each dot is a constituency. The black line marks the middle one.

Hayes and HarlingtonMiddle
Majority, 2024 general election650 constituencies, UK · Jul 2024
Majority, 2024 general election: every constituency in UK650 areas from 0.0% to 60.6%. The middle area is 14.1%. Hayes and Harlington is 31.4%.
31.4%joint 82nd largest majority
Turnout, 2024 general election650 constituencies, UK · Jul 2024
Turnout, 2024 general election: every constituency in UK650 areas from 40.0% to 75.2%. The middle area is 60.0%. Hayes and Harlington is 51.5%.
51.5%joint 81st lowest turnout
Population650 constituencies, UK · 2021
Population: every constituency in UK650 areas from 26,159 to 151,876. The middle area is 100,988. Hayes and Harlington is 126,416.
126,41626th most populated
People in radon Affected Area squares650 constituencies, UK · 2022
People in radon Affected Area squares: every constituency in UK650 areas from 0.0% to 100.0%. The middle area is 39.0%. Hayes and Harlington is 0.0%.
0%joint fewest people in radon Affected Areas

Every constituency ranked: population and people in radon affected area squares.

What is the population of Hayes and Harlington?

Hayes and Harlington had 126,416 usual residents at the census.

Hayes and Harlington is the 26th most populated of 650 in the UK.

Figures for the whole of Hillingdon

Most of Hayes and Harlington lies in Hillingdon. These figures are published for the whole of Hillingdon, not for constituencies, so they describe the council and not Hayes and Harlington itself. See Hillingdon

Average house price
£482,137
No change in a year
HM Land Registry · Aug 2026
Median full-time pay
£42,250
98th highest paid of 348
ONS earnings survey · 2025
House price to pay
11.4×
Joint 29th least affordable of 348
Worked out by Open Index
Deprivation score
20.7
Joint 127th most deprived of 296
MHCLG · England only
Hayes and Harlington in brief

The winner in Hayes and Harlington had a majority of 31.4% of valid votes at the general election on 4 July 2024.

Turnout in Hayes and Harlington at the general election on 4 July 2024 was 51.5%.

Hayes and Harlington had 126,416 usual residents at the census.

About 0% of people in Hayes and Harlington live in a 1 km square that the radon atlas marks as a radon Affected Area.