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Parliamentary constituency

Hertsmere

Current MP, latest election result, geographic context and official constituency information.

At a glance

Current MP
Sir Oliver Dowden
Party
Conservative
Latest election
4 July 2024
Electorate
73,465
Turnout
65.3%
Majority
7,992

Where is Hertsmere?

The map shows this constituency alongside neighbouring parliamentary constituencies for geographic context.

Hertsmere Chipping Barnet St Albans Harrow East Hendon Welwyn Hatfield Finchley and Golders Green Brent West Brent East Watford Harrow West Southgate and Wood Green Hampstead and Highgate Queen's Park and Maida Vale Ealing Central and Acton Hornsey and Friern Barnet Ealing North South West Hertfordshire Ruislip, Northwood and Pinner Islington North Kensington and Bayswater Ealing Southall Enfield North Holborn and St Pancras Edmonton and Winchmore Hill Uxbridge and South Ruislip Tottenham Luton South and South Bedfordshire Stevenage Islington South and Finsbury Cities of London and Westminster Hemel Hempstead Hackney North and Stoke Newington Harpenden and Berkhamsted Broxbourne Hackney South and Shoreditch Hitchin Hayes and Harlington Walthamstow Bethnal Green and Stepney Chingford and Woodford Green Stratford and Bow Leyton and Wanstead Poplar and Limehouse North East Hertfordshire Epping Forest Beaconsfield Chesham and Amersham East Ham Ilford North West Ham and Beckton Slough Aylesbury Hertford and Stortford Ilford South Barking Romford Dagenham and Rainham Harlow Maidenhead Brentwood and Ongar Hornchurch and Upminster North West Essex Mid Buckinghamshire England
Hertsmere

Boundary data: ONS Open Geography Portal.

Local context

About this constituency

Hertsmere lies immediately north of London and includes a series of Hertfordshire commuter towns and suburban communities. Borehamwood, Bushey, Potters Bar and Radlett are among its principal centres, each with strong road or rail links toward the capital. Much of the constituency is built up, but substantial green-belt land, woodland and farmland separate the main settlements and prevent them from forming one continuous urban area. The southern edge is closely connected to outer London, while communities farther north retain a more distinct Hertfordshire character. Overall, the seat combines established suburbs, commuter towns and significant open space rather than being dominated by a single centre.

Description last reviewed 11 September 2026.

Current MP

Sir Oliver Dowden MP

Conservative

Represents Hertsmere in the House of Commons.

Latest election

2024 General Election

Held on 4 July 2024

Winning party
Conservative
Majority
7,992
Turnout
65.3%
Full candidate result (6 candidates)
CandidatePartyVotesShareChange
Oliver DowdenElectedConservative21,45144.7%-20.2%
Josh TapperLabour13,45928.0%6.9%
Darren SelkusReform UK6,58413.7%—
Emma MatanleLiberal Democrat3,7107.7%-3.2%
John HumphriesGreen Party2,2674.7%1.6%
Ray BolsterIndependent5361.1%—

Election data comes from UK Parliament. Turnout percentage is calculated by Project Open Gov from Parliament's turnout and electorate figures.

People and place

A population and household snapshot for Hertsmere, using validated House of Commons Library constituency datasets.

Estimated population107,865
EstimateMid-2024 estimate
Region / nationEast of England

Age profile

0 to 1722.1% · 23,853 people
18 to 246.7% · 7,242 people
25 to 3411.5% · 12,388 people
35 to 4920.9% · 22,595 people
50 to 6419.5% · 21,021 people
65 and over19.3% · 20,766 people

Population figures are mid-2024 estimates from the House of Commons Library. Project Open Gov calculates the estimated population shown above by summing the six published age-band counts. View population source ↗

Home ownership and renting

Housing tenure shows how households in this constituency described their home at the most recent census.

41,937 householdsCensus 2021
Home owners65.2% · 27,322 households
Private renters16.8% · 7,065 households
Social renters16.9% · 7,069 households
Other tenure1.1% · 481 households

“Other tenure” combines shared ownership and households recorded as living rent free.

Housing-tenure figures come from the most recent census: 2021 in England, Wales and Northern Ireland and 2022 in Scotland. View housing-tenure source ↗

Household composition

A broad view of household types in this constituency. Project Open Gov uses the four broad groups supplied by the Commons Library so the presentation remains consistent across the UK.

41,940 householdsCensus 2021
One-person households27.0% · 11,312 households
Families with dependent children32.7% · 13,713 households
Other single-family households35.8% · 15,022 households
Other household types4.5% · 1,893 households

Household-composition figures come from the Commons Library constituency dataset. The source uses census data and Project Open Gov displays its broad household groups rather than attempting to harmonise the detailed categories itself. View household-composition source ↗

Disability and day-to-day activities

The source records whether day-to-day activities are limited and uses separate person-level tables for England & Wales, Scotland and Northern Ireland.

105,908 people in the source baseCensus 2021Source comparison: England & Wales
Day-to-day activities limited a lot5.8% · 6,115 people
Day-to-day activities limited a little8.3% · 8,769 people
Not disabled under the Equality Act85.9% · 91,024 people

Comparison note: the workbook uses different source terminology across the UK: England & Wales uses “Disabled under the Equality Act”, while Scotland and Northern Ireland use “Disabled” / “Non-disabled”. Project Open Gov therefore preserves the source categories and does not present them as one single like-for-like UK legal definition.

Disability figures come from the Commons Library constituency workbook. This profile uses the person-level tables only; the workbook also contains separate household-level disability tables which are not used here. View disability source ↗

This constituency in Parliament

A high-confidence subset of current-session parliamentary records from this constituency's current MP where the full constituency name is stated explicitly in the written question, debate title or recorded section.

This is not a complete record of every local issue raised in Parliament. Project Open Gov does not currently infer a constituency connection from the MP relationship alone, speech text, nearby place names or other local entities.

Written question29 June 2026

Sexual Offences: Victims

Raised by Sir Oliver Dowden MP

To ask the Secretary of State for Justice, what assessment his Department has made of the potential impact of court delays on the mental wellbeing of victims of sexual violence in Hertsmere constituency.

Petitions

Open UK Government and Parliament petitions that have reached at least 10,000 signatures nationally, ranked here by the number of signatures recorded in this constituency.

Petition signatures are not a poll and do not show what the constituency as a whole thinks. A person can also sign more than one petition.

Open petitionCloses 8 December 2026

End the mandatory fortification of white flour with folic acid immediately

Signatures in this constituency156
Signatures nationally127,802

Government response published · 100,000-signature debate threshold reached

View 64 more petitions
Open petitionCloses 20 November 2026

Hold a UK-wide briefing on climate and nature risks

Signatures in this constituency113
Signatures nationally134,545

Government response published · Debate scheduled for 16 November 2026

Open petitionCloses 16 March 2027

Reduce the state pension age to 65 for all

Signatures in this constituency99
Signatures nationally112,527

Government response published · 100,000-signature debate threshold reached

Signature counts come from the official UK Government and Parliament petitions data and may change while a petition remains open. Browse official petitions ↗

Funding and local projects

National Lottery grants awarded to organisations recorded in this parliamentary constituency since 4 July 2024.

The constituency is based on the recipient organisation recorded in the source data. The funded activity may sometimes take place across a wider area.

Grants recorded37
Total awarded£1,615,290

Most recent awards

National Lottery grantAwarded 14 May 2026

Regain Independence Through Adaptive Sport

Regain - The Charity for Tetraplegics

£14,550

Sport England · Sport

About this award

This project will provide specialist adaptive sports equipment and mentoring to 30 sports tetraplegics across the UK. This project will fund essential equipment such as handcycles and power-assisted wheelchairs, alongside peer mentoring and wellbeing support, including two in-person three hour sessions per month, over 10 months, and online support. Funding will cover facility hire, mentoring, equipment, transport and promotion costs.

National Lottery grantAwarded 23 April 2026

Help 4 the Homeless Central Operational Hub

Help 4 the Homeless (London and Home Counties)

£18,500

The National Lottery Community Fund · Charitable and Community including Health, Education and Environment

About this award

Help 4 the Homeless (London and Home Counties) - Environment - National Lottery Awards for All England

National Lottery grantAwarded 9 April 2026

Herts Musical Memories

Herts Musical Memories

£19,995

The National Lottery Community Fund · Charitable and Community including Health, Education and Environment

About this award

Herts Musical Memories - Community - National Lottery Awards for All England

National Lottery grantAwarded 7 April 2026

Gro-Up

My Yard

£9,395

The National Lottery Community Fund · Charitable and Community including Health, Education and Environment

About this award

My Yard - Environment - National Lottery Awards for All England

National Lottery grantAwarded 7 April 2026

Sustaining Comfort Case Delivery for Children in Care Through Core Staff Funding

Comfort Cases UK

£20,000

The National Lottery Community Fund · Charitable and Community including Health, Education and Environment

About this award

Comfort Cases UK - Children & Young People - National Lottery Awards for All England

32 more awards are available.

Source: DCMS National Lottery Grants Database. The figures shown cover awards from 4 July 2024 to 1 July 2026. View official grants data ↗

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