Hounslow · TW4

Gas safety certificate in TW4 (Hounslow West)? We'll point you the right way.

Covering Hounslow West, Hounslow Heath, Whitton, including Cranford, Heathfield, Heston Central. Find Gas Safe registered engineers nearby.

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Request a gas safety certificate in TW4 (Hounslow West)

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Request a gas safety certificate in TW4 (Hounslow West)

How to check a gas safety engineer is registered: see the Hounslow page.

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TW4 (Hounslow West) in a nutshell

TW4 covers Hounslow West, Hounslow Heath, Whitton, in Hounslow and Richmond upon Thames. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.

Local tips for TW4

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Two councils in one district

TW4 is split between Hounslow and Richmond upon Thames. Some councils run their own landlord licensing, so check which one your home is in.

Where's this from?postcodes.io (ONSPD) local authority
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Give your full postcode

TW4 stretches across Cranford, Heathfield, Heston Central and more, so give your full postcode, not just 'TW4', when you ask for quotes.

Where's this from?postcodes.io (ONSPD) wards
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Postcodes change here

Lots of old TW4 postcodes have been retired. If an old letter shows a different postcode, use your current one.

Where's this from?Doogal/ONSPD: 428 of 740 postcodes active
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New to gas safety certificates? Here's what to expect, how to get ready and what it costs, in plain English. Read the quick guide →

England landlord rules: quick version

  • Every year: a check by a Gas Safe registered engineer.
  • Within 28 days: give your tenants a copy (new tenants get it before they move in).
  • Keep it: hang on to records for at least 2 years.

More detail on the Hounslow page. Always double-check on GOV.UK.

Next door to TW4

TW5 · HestonTW3 · HounslowUB2 · SouthallTW13 · FelthamTW14 · HattonUB1 · Southall

← Gas safety (CP12) across Hounslow · all areas

Frequently asked questions

Which areas does TW4 cover?

TW4 (Hounslow West, Hounslow Heath, Whitton) includes the wards of Cranford, Heathfield, Heston Central, Hounslow Central, Hounslow Heath, Hounslow West (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to TW4?

Neighbouring districts include TW5 (Heston), TW3 (Hounslow), UB2 (Southall), TW13 (Feltham), TW14 (Hatton) (ONS Postcode Directory via Doogal). A pro covering TW4 may well cover these too, so it's worth asking.

How many homes are in TW4?

About 9,140 households and 27,902 residents at the 2011 Census, across 428 active postcodes (Doogal / ONS Postcode Directory).

Which council area is TW4 in?

TW4 sits in Hounslow, Richmond upon Thames (postcodes.io). Parliamentary constituency: Brentford and Isleworth, Feltham and Heston, Twickenham.

📊 The numbers behind this page
Postcode district
TW4 1
Areas covered
Hounslow West, Hounslow Heath, Whitton 2
Active postcodes
428 3
Households (2011 Census, via Doogal)
9,140 2
Population (2011 Census, via Doogal)
27,902 2
Electoral wards
Cranford, Heathfield, Heston Central, Hounslow Central, Hounslow Heath, Hounslow West 4
Parliamentary constituencies
Brentford and Isleworth, Feltham and Heston, Twickenham 4
Local authority
Hounslow, Richmond upon Thames 4
Households heated by mains gas only (Hounslow built-up area)
67.7% 5
  1. ONS Postcode Directory
  2. Doogal
  3. Doogal / ONSPD
  4. postcodes.io
  5. ONS Census 2021

Made with open data. See where it all comes from. Updated 26 October 2026.