Wigan · WN4

Gas safety certificate in WN4 (Ashton-in-Makerfield)? We'll point you the right way.

Covering Ashton-in-Makerfield, Garswood, including Ashton-in-Makerfield South, Billinge & Seneley Green, Bryn with Ashton-in-Makerfield North. Find Gas Safe registered engineers nearby.

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Request a gas safety certificate in WN4 (Ashton-in-Makerfield)

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Request a gas safety certificate in WN4 (Ashton-in-Makerfield)

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

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WN4 (Ashton-in-Makerfield) in a nutshell

WN4 covers Ashton-in-Makerfield, Garswood, in St. Helens and Wigan. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.

Local tips for WN4

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Two councils in one district

WN4 is split between St. Helens and Wigan. 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

WN4 stretches across Ashton-in-Makerfield South, Billinge & Seneley Green, Bryn with Ashton-in-Makerfield North and more, so give your full postcode, not just 'WN4', 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 Wigan run on mains gas, so a standard boiler-and-hob check is what most people need.

Where's this from?ONS Census 2021, Wigan: 81.8% 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.

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

Next door to WN4

WN3 · Goose GreenWA12 · Newton-le-WillowsWN1 · HaighWN5 · BillingeWA11 · CrankWN2 · Abram

← Gas safety (CP12) across Wigan · all areas

Frequently asked questions

Which areas does WN4 cover?

WN4 (Ashton-in-Makerfield, Garswood) includes the wards of Ashton-in-Makerfield South, Billinge & Seneley Green, Bryn with Ashton-in-Makerfield North, Golborne & Lowton West, Haydock, Wigan Central, Winstanley (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to WN4?

Neighbouring districts include WN3 (Goose Green), WA12 (Newton-le-Willows), WN1 (Haigh), WN5 (Billinge), WA11 (Crank) (ONS Postcode Directory via Doogal). A pro covering WN4 may well cover these too, so it's worth asking.

How many homes are in WN4?

About 12,016 households and 28,794 residents at the 2011 Census, across 604 active postcodes (Doogal / ONS Postcode Directory).

Which council area is WN4 in?

WN4 sits in St. Helens, Wigan (postcodes.io). Parliamentary constituency: Leigh and Atherton, Makerfield, St Helens North, Wigan.

📊 The numbers behind this page
Postcode district
WN4 1
Areas covered
Ashton-in-Makerfield, Garswood 2
Active postcodes
604 3
Households (2011 Census, via Doogal)
12,016 2
Population (2011 Census, via Doogal)
28,794 2
Electoral wards
Ashton-in-Makerfield South, Billinge & Seneley Green, Bryn with Ashton-in-Makerfield North, Golborne & Lowton West, Haydock, Wigan Central, Winstanley 4
Parliamentary constituencies
Leigh and Atherton, Makerfield, St Helens North, Wigan 4
Local authority
St. Helens, Wigan 4
Households heated by mains gas only (Wigan built-up area)
81.8% 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.