M40 postcode district

Postcodes and sectors

1,394 of the district's 1,806 postcodes are live in the ONS Postcode Directory of August 2026. A postcode directory says whether a code is in use, never who is there. The live postcodes centre on 53.50405, -2.19116, which locates the district, not a building.

Companies registered in M40

Companies House lists 10,762 companies with a registered office in M40; 455 of them at addresses shared by 25 or more companies (1 October 2026 snapshot). 25 is the count at which the address lookup reports a company cluster.

Places OS Open Names lists for M40

• North West
• Manchester
• Oldham
• Chadderton
• Failsworth

Roads filed under M40

Named roads first, then numbered ones. A road is filed under one district even where it runs through several, so a street missing here may be listed under a neighbouring district — which is why the address lookup never calls a British street absent. Great Britain has no open register of buildings, so a listed road never means a building on it exists.

• Abberley Drive
• Abbeydale Road
• Abinger Walk
• Acton Avenue
• Adrian Street
• Adstock Walk
• Adswood Street
• Ailsa Close
• Ainsley Street
• Ainthorpe Walk
• Airton Close
• Albert Gardens
• Albine Street
• Aldbourne Close
• Aldham Avenue
• Aldsworth Drive
• Alfreton Walk
• Alker Road
• Allenby Walk
• Alloway Walk
• All Saints' Street
• Alminstone Close
• Almond Street
• Alperton Walk
• Alpington Walk
• Altham Walk
• Althorpe Walk
• Amos Avenue
• Amport Walk
• Ancaster Walk
• Anfield Road
• Annesley Road
• Anscombe Close
• Anslow Close
• Arbory Avenue
• Ardale Avenue
• Arden Grove
• Armitage Owen Walk
• Arran Street
• Ascot Road
• Ashbury Place
• Ashfield Drive
• Ashlands Avenue
• Ashley Court Drive
• Ashville Terrace
• Askett Close
• Assheton Crescent
• Assheton Road
• Astoria Avenue
• Atherley Grove
• Athlone Avenue
• Athos Walk
• Attleboro Road
• Audax Walk
• Audlem Close
• Averill Street
• Avonbrook Drive
• Axbridge Walk
• Aylestone Walk
• Bacup Street

Check an address in M40

Check an address in M40

The same road list through the API, from the outward code alone:

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=M40" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about M40

What does an M40 postcode tell you?

That the address lies in the M40 district of the M (Manchester) postcode area, and the place OS Open Names most often lists first for its postcodes is Manchester. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 1,394 live postcodes.

Where the counts come from

• ons-postcode-directory · version 2026-08 · Contains ONS, OS and Royal Mail data © Crown copyright and database right 2026, Open Government Licence v3.0. Northern Ireland postcodes are excluded: their reuse needs a Land & Property Services licence.
• os-open-names · version 2026-11-01 · Contains OS data © Crown copyright and database right 2026, Open Government Licence v3.0.
• uk-companies-house · version 2026-10-01 · Companies House free company data product, Open Government Licence v3.0

What each figure means, and what a district page never says, is set out in Reading a British postcode district page; the glossary defines a postcode district, a postcode area, a postcode directory and a street register.

Data synced on 2026-11-01: the newest version among the datasets listed above.

Districts nearest M40

• M352.4 km
• M92.5 km
• M112.9 km
• M613.2 km
• M83.3 km
• M43.3 km
• M433.6 km
• M603.6 km
• M14.2 km
• M24.4 km
• M124.5 km
• M34.7 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids