Gerrards Cross · UB9

Gas safety certificate in UB9 (Denham)? We'll point you the right way.

Covering Denham, Harefield, including Chorleywood South & Maple Cross, Gerrards Cross & Denham, Harefield Village. Find Gas Safe registered engineers nearby.

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Request a gas safety certificate in UB9 (Denham)

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UB9 (Denham) in a nutshell

UB9 covers Denham, Harefield, in Buckinghamshire and Hillingdon and Three Rivers. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.

Local tips for UB9

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Two councils in one district

UB9 is split between Buckinghamshire and Hillingdon and Three Rivers. 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

UB9 stretches across Chorleywood South & Maple Cross, Gerrards Cross & Denham, Harefield Village and more, so give your full postcode, not just 'UB9', when you ask for quotes.

Where's this from?postcodes.io (ONSPD) wards
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Mostly mains gas round here

Most homes in Gerrards Cross run on mains gas, so a standard boiler-and-hob check is what most people need.

Where's this from?ONS Census 2021, Gerrards Cross: 82.2% mains gas only
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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.

Always double-check on GOV.UK.

Next door to UB9

UB8 · UxbridgeUB10 · HillingdonWD3 · Batchworth HeathSL9 · Chalfont CommonSL0 · IverHA4 · Ruislip

all areas

Frequently asked questions

Which areas does UB9 cover?

UB9 (Denham, Harefield) includes the wards of Chorleywood South & Maple Cross, Gerrards Cross & Denham, Harefield Village, Ickenham & South Harefield, Ruislip, Uxbridge (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to UB9?

Neighbouring districts include UB8 (Uxbridge), UB10 (Hillingdon), WD3 (Batchworth Heath), SL9 (Chalfont Common), SL0 (Iver) (ONS Postcode Directory via Doogal). A pro covering UB9 may well cover these too, so it's worth asking.

How many homes are in UB9?

About 5,979 households and 14,336 residents at the 2011 Census, across 431 active postcodes (Doogal / ONS Postcode Directory).

Which council area is UB9 in?

UB9 sits in Buckinghamshire, Hillingdon, Three Rivers (postcodes.io). Parliamentary constituency: Beaconsfield, Chesham and Amersham, Ruislip, Northwood and Pinner, South West Hertfordshire, Uxbridge and South Ruislip.

📊 The numbers behind this page
Postcode district
UB9 1
Areas covered
Denham, Harefield 2
Active postcodes
431 3
Households (2011 Census, via Doogal)
5,979 2
Population (2011 Census, via Doogal)
14,336 2
Electoral wards
Chorleywood South & Maple Cross, Gerrards Cross & Denham, Harefield Village, Ickenham & South Harefield, Ruislip, Uxbridge 4
Parliamentary constituencies
Beaconsfield, Chesham and Amersham, Ruislip, Northwood and Pinner, South West Hertfordshire, Uxbridge and South Ruislip 4
Local authority
Buckinghamshire, Hillingdon, Three Rivers 4
Households heated by mains gas only (Gerrards Cross built-up area)
82.2% 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.