Manchester · M21

Gas safety certificate in M21 (Chorlton-cum-Hardy)? We'll point you the right way.

Covering Chorlton-cum-Hardy, Firswood, including Chorlton, Chorlton Park, Longford. Find Gas Safe registered engineers nearby.

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Request a gas safety certificate in M21 (Chorlton-cum-Hardy)

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Request a gas safety certificate in M21 (Chorlton-cum-Hardy)

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

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M21 (Chorlton-cum-Hardy) in a nutshell

M21 covers Chorlton-cum-Hardy, Firswood, in Manchester and Trafford. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.

Local tips for M21

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Two councils in one district

M21 is split between Manchester and Trafford. 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

M21 stretches across Chorlton, Chorlton Park, Longford and more, so give your full postcode, not just 'M21', when you ask for quotes.

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

Lots of old M21 postcodes have been retired. If an old letter shows a different postcode, use your current one.

Where's this from?Doogal/ONSPD: 727 of 1,737 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 Manchester page. Always double-check on GOV.UK.

Next door to M21

M16 · FirswoodM32 · StretfordM15 · HulmeM5 · OrdsallM50 · Salford QuaysM23 · Baguley

← Gas safety (CP12) across Manchester · all areas

Frequently asked questions

Which areas does M21 cover?

M21 (Chorlton-cum-Hardy, Firswood) includes the wards of Chorlton, Chorlton Park, Longford, Whalley Range (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to M21?

Neighbouring districts include M16 (Firswood), M32 (Stretford), M15 (Hulme), M5 (Ordsall), M50 (Salford Quays) (ONS Postcode Directory via Doogal). A pro covering M21 may well cover these too, so it's worth asking.

How many homes are in M21?

About 12,290 households and 29,233 residents at the 2011 Census, across 727 active postcodes (Doogal / ONS Postcode Directory).

Which council area is M21 in?

M21 sits in Manchester, Trafford (postcodes.io). Parliamentary constituency: Manchester Rusholme, Manchester Withington, Stretford and Urmston.

📊 The numbers behind this page
Postcode district
M21 1
Areas covered
Chorlton-cum-Hardy, Firswood 2
Active postcodes
727 3
Households (2011 Census, via Doogal)
12,290 2
Population (2011 Census, via Doogal)
29,233 2
Electoral wards
Chorlton, Chorlton Park, Longford, Whalley Range 4
Parliamentary constituencies
Manchester Rusholme, Manchester Withington, Stretford and Urmston 4
Local authority
Manchester, Trafford 4
Households heated by mains gas only (Manchester built-up area)
64.9% 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.