M3 postcode district

Postcodes and sectors

642 of the district's 1,197 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 53.48377, -2.25291, which locates the district, not a building.

Companies registered in M3

Companies House lists 9,349 companies with a registered office in M3; 4,297 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 M3

• North West
• Salford
• Manchester

Roads filed under M3

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.

• Adelphi Street
• Allendale Walk
• Anaconda Drive
• Angora Drive
• Arlington Street
• Artillery Street
• Atherton Street
• Atkinson Street
• Back Bridge Street
• Back College Land
• Back South Parade
• Bank Place
• Bankside Boulevard
• Bank Street
• Barker Street
• Barlow's Croft
• Barnett Drive
• Barrow Street
• Barton Street
• Beaufort Street
• Bevill Square
• Blackburn Street
• Blackfriars Road
• Blackfriars Street
• Bloom Street
• Booth Street
• Breslyn Street
• Brickley Street
• Briddon Street
• Bridge Street
• Bridgewater Street
• Bridgewater Viaduct
• Briggs Street
• Brocade Close
• Brotherton Drive
• Browncross Street
• Browning Street
• Burton Walk
• Bury Street
• Butter Lane
• Byrom Place
• Byrom Street
• Calico Close
• Camp Street
• Cannon Court
• Cannon Street
• Canon Green Drive
• Carding Grove
• Carnarvon Street
• Castle Street
• Catalan Square
• Cateaton Street
• Cathedral Approach
• Cathedral Gates
• Cathedral Street
• Cathedral Yard
• Caxton Street
• Century Street
• Change Way
• Chapel Street

Check an address in M3

Check an address in M3

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=M3" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about M3

What does an M3 postcode tell you?

That the address lies in the M3 district of the M (Manchester) postcode area, and the place OS Open Names most often lists first for its postcodes is Salford. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 642 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 M3

• M20.7 km
• M601.2 km
• M11.3 km
• M41.5 km
• M611.6 km
• M151.8 km
• M52.0 km
• M72.5 km
• M82.9 km
• M502.9 km
• M63.2 km
• M163.3 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids