M21 postcode district

Postcodes and sectors

727 of the district's 1,737 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 53.43801, -2.27293, which locates the district, not a building.

Companies registered in M21

Companies House lists 2,719 companies with a registered office in M21; 866 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 M21

• Manchester
• North West
• Trafford

Roads filed under M21

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.

• Abbeystead Avenue
• Abbotsford Road
• Acres Passage
• Acres Road
• Adams Avenue
• Albany Road
• Albemarle Road
• Alderfield Road
• Aldermary Road
• Alsager Close
• Anchorside Close
• Ansdell Avenue
• Arrowfield Drive
• Arrowfield Road
• Astbury Avenue
• Attercliffe Road
• Aveson Avenue
• Aycliffe Avenue
• Badminton Road
• Barlow Hall Road
• Barlow Moor Road
• Barway Road
• Batchelor Close
• Beaumont Road
• Beech Mews
• Beech Road
• Beechwood Avenue
• Belgravia Gardens
• Belwood Road
• Bentley Road
• Bolesworth Close
• Brabham Close
• Brandwood Avenue
• Brantingham Road
• Brassington Avenue
• Brookburn Road
• Brookfield Avenue
• Brookstone Close
• Brundretts Road
• Bryan Road
• Buckfast Close
• Buckingham Road
• Bullfinch Walk
• Burleigh Mews
• Burrows Avenue
• Caddington Road
• Caldervale Avenue
• Callingdon Road
• Cartwright Road
• Castleford Walk
• Chandos Road
• Chandos Road South
• Chatburn Road
• Chatfield Road
• Chelsfield Grove
• Cheltenham Road
• Chepstow Road
• Chequers Road
• Chestnut Avenue
• Chorlton Green

Check an address in M21

Check an address in M21

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=M21" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about M21

What does an M21 postcode tell you?

That the address lies in the M21 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 727 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 M21

• M162.0 km
• M322.8 km
• M203.1 km
• M143.3 km
• M153.6 km
• M334.0 km
• M504.3 km
• M234.4 km
• M174.6 km
• M134.6 km
• M54.6 km
• M15.0 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids