# Brentford and Isleworth

West London. About 133,076 people (mid-2024 estimate) in 23 square kilometres.

Ruth Cadbury has been the Labour MP for Brentford and Isleworth since July 2024. They won by 9,824 votes on a 57.0% turnout.

Constituency. Code E14001124. In: [London](https://openindex.co.uk/london)

## MP and the 2024 result

Ruth Cadbury has been the Labour MP for Brentford and Isleworth since July 2024.
They won by 9,824 votes on a 57.0% turnout.

MP: [Ruth Cadbury](https://members.parliament.uk/member/4389) (Labour).

### General election, 4 July 2024: Brentford and Isleworth

| Candidate | Party | Votes | Share |
| --- | --- | --- | --- |
| Ruth Cadbury (elected) | Labour | 20,007 | 44.2% |
| Laura Blumenthal | Conservative | 10,183 | 22.5% |
| Freya Summersgill | Green Party | 4,029 | 8.9% |
| David Kerr | Reform UK | 3,940 | 8.7% |
| Kuldev Sehra | Liberal Democrat | 3,863 | 8.5% |
| Nisar Malik | Workers Party of Britain | 2,746 | 6.1% |
| Zebunisa Rao | Independent | 486 | 1.1% |

Electorate 79,423. Turnout 57.0%. Majority 9,824 (21.7%). Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: House of Commons Library, UK Parliament election results. https://electionresults.parliament.uk/elections/3332

MP as of 18 October 2026. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

## Key figures

- **Majority, 2024 general election: 21.7%** (July 2024). The winner in Brentford and Isleworth had a majority of 21.7% of valid votes at the general election on 4 July 2024 (House of Commons Library). Joint 184th largest majority of 650. Source: UK Parliament election results, July 2024. Published 4 July 2024. https://openindex.co.uk/constituency/brentford-and-isleworth#f-ge2024-majority
- **Turnout, 2024 general election: 57.0%** (July 2024). Turnout in Brentford and Isleworth at the general election on 4 July 2024 was 57.0% (House of Commons Library). Joint 209th lowest turnout of 650. Source: UK Parliament election results, July 2024. Published 4 July 2024. https://openindex.co.uk/constituency/brentford-and-isleworth#f-ge2024-turnout
- **Population: 128,725** (2021). Brentford and Isleworth had 128,725 usual residents at the census (ONS Census 2021). 18th most populated of 650. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/constituency/brentford-and-isleworth#f-population
- **People in radon Affected Area squares: 0%** (2022). About 0% of people in Brentford and Isleworth live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022. https://openindex.co.uk/constituency/brentford-and-isleworth#f-radon-affected-share

## On the map

- [Radon Affected Area by constituency](https://openindex.co.uk/map/radon-affected-areas?place=E14001124) (Worked out by Open Index · 2022): About 0% of people in Brentford and Isleworth live in a 1 km square that the radon atlas marks as a radon Affected Area.
- [Average house price by council](https://openindex.co.uk/map/house-prices?place=E14001124) (UK House Price Index · August 2026): Published for whole councils, so the map colours all of Hounslow, where most of this constituency lies. The outline is Brentford and Isleworth.
- [Crime and ASB by council](https://openindex.co.uk/map/recorded-crime?place=E14001124) (Police recorded crime and outcomes (data.police.uk) · August 2026): Published for whole councils, so the map colours all of Hounslow, where most of this constituency lies. The outline is Brentford and Isleworth.
- [Population by constituency](https://openindex.co.uk/map/population?place=E14001124) (Census 2021, England and Wales): Brentford and Isleworth had 128,725 usual residents at the census.

## How Brentford and Isleworth compares

Each constituency against every other constituency the measure covers.

| Measure | Brentford and Isleworth | Rank | Compared with |
| --- | --- | --- | --- |
| Majority, 2024 general election | 21.7% | joint 184th largest majority | 650 constituencies, UK · Jul 2024 |
| Turnout, 2024 general election | 57.0% | joint 209th lowest turnout | 650 constituencies, UK · Jul 2024 |
| Population | 128,725 | 18th most populated | 650 constituencies, UK · 2021 |
| People in radon Affected Area squares | 0% | joint fewest people in radon Affected Areas | 650 constituencies, UK · 2022 |

## What is the population of Brentford and Isleworth?

Brentford and Isleworth had 128,725 usual residents at the census.
Brentford and Isleworth is the 18th most populated of 650 in the UK.

## Figures for the whole of Hounslow

Most of Brentford and Isleworth lies in Hounslow. These figures are published for the whole of Hounslow, not for constituencies, so they describe the council and not Brentford and Isleworth itself. [See Hounslow](https://openindex.co.uk/hounslow)

- **Average house price: £528,051** (August 2026). Hounslow’s average house price was £528,051 in August 2026 (HM Land Registry). Down 1.5% in a year. Source: UK House Price Index, August 2026. Published 21 October 2026.
- **Median full-time pay: £40,870** (2025). Full-time workers living in Hounslow earned a median of £40,870 in 2025 (ONS earnings survey). Joint 122nd highest paid of 348. Source: Annual Survey of Hours and Earnings, 2025. Published 23 October 2025.
- **House price to pay: 12.9×** (2025). A home in Hounslow costs 12.9 times local full-time pay. Joint 11th least affordable of 348. Source: Worked out by Open Index from the UK House Price Index and the ONS earnings survey. Published 21 October 2026.
- **Deprivation score: 24.9** (2025). Hounslow has a deprivation score of 24.9 in the English Indices of Deprivation 2025 (MHCLG). Joint 81st most deprived of 296. Source: English Indices of Deprivation 2025, 2025. Published 30 October 2025.

## Brentford and Isleworth in brief

The winner in Brentford and Isleworth had a majority of 21.7% of valid votes at the general election on 4 July 2024.
Turnout in Brentford and Isleworth at the general election on 4 July 2024 was 57.0%.
Brentford and Isleworth had 128,725 usual residents at the census.
About 0% of people in Brentford and Isleworth live in a 1 km square that the radon atlas marks as a radon Affected Area.

## About

- Type: Constituency
- Code: E14001124
- Council: [Hounslow †](https://openindex.co.uk/hounslow)
- Region: [London](https://openindex.co.uk/london)
- Nation: [England](https://openindex.co.uk/england)
- Area: 22.85 km²
- People, mid-2024: 133,076*
- Wards: 11
- Middle areas: 13
- Neighbourhoods: 67
- Output areas: 352

* People: worked out by Open Index from neighbourhood estimates, shared out by where people lived at the census (by area in Northern Ireland). This area's edges do not follow neighbourhood edges, so the figure is close but not exact.
† Best fit: the council this constituency mostly lies in. Its edges do not follow it.

## Next door

[Feltham and Heston](https://openindex.co.uk/constituency/feltham-and-heston), [Twickenham](https://openindex.co.uk/constituency/twickenham), [Ealing Southall](https://openindex.co.uk/constituency/ealing-southall), [Hammersmith and Chiswick](https://openindex.co.uk/constituency/hammersmith-and-chiswick)

## Similar places

Constituencies with the closest mix of age and density. [Hendon](https://openindex.co.uk/constituency/hendon), [Birmingham Hall Green and Moseley](https://openindex.co.uk/constituency/birmingham-hall-green-and-moseley), [Ealing North](https://openindex.co.uk/constituency/ealing-north), [Mitcham and Morden](https://openindex.co.uk/constituency/mitcham-and-morden), [Ealing Central and Acton](https://openindex.co.uk/constituency/ealing-central-and-acton), [Birmingham Yardley](https://openindex.co.uk/constituency/birmingham-yardley).

## Latest updates for Brentford and Isleworth

- August 2026 house prices published: HM Land Registry and partners · Oct 2026.
- September 2026 rent published: ONS private rents · Oct 2026.
- Dental practices updated: NHS England · Oct 2026.
- Schools updated: Ofsted · Oct 2026.

The same figures as JSON: https://openindex.co.uk/v1/places/E14001124

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/constituency/brentford-and-isleworth, or to one figure with its anchor, https://openindex.co.uk/constituency/brentford-and-isleworth#f-ge2024-majority.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.9. The HTML page: https://openindex.co.uk/constituency/brentford-and-isleworth