SM4 postcode district

Postcodes and sectors

581 of the district's 880 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 51.39301, -0.19971, which locates the district, not a building.

Companies registered in SM4

Companies House lists 5,309 companies with a registered office in SM4; 2,629 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 SM4

• Greater London
• London
• Merton
• Morden
• Sutton

Roads filed under SM4

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.

• Abbotsbury Road
• Aberconway Road
• Alexandra Square
• Allgood Close
• Alnwick Grove
• Alpha Place
• Amberley Way
• Amenity Way
• Aragon Place
• Aragon Road
• Arbuthnot Road
• Arras Avenue
• Arundel Avenue
• Ashley Avenue
• Ashridge Way
• Bardney Road
• Bayham Road
• Beaver Close
• Beeleigh Road
• Birchwood Close
• Bishopsford Road
• Blanchland Road
• Bodmin Grove
• Bolton Drive
• Bordesley Road
• Bow Lane
• Boxley Road
• Bristol Road
• Bruton Road
• Buckfast Road
• Buckland Walk
• Burnham Road
• Bury Grove
• Buttermere Close
• Byland Close
• Calder Road
• Camborne Road
• Camrose Close
• Cannon Hill Lane
• Canterbury Road
• Cardinal Avenue
• Cardinal Close
• Carlingford Road
• Cartmel Gardens
• Cedars Road
• Central Road
• Cerne Road
• Chalgrove Avenue
• Charminster Road
• Cherry Close
• Cherrywood Lane
• Chester Gardens
• Churston Drive
• Cleveland Rise
• Combermere Road
• Connaught Gardens
• Cranmer Close
• Crowland Walk
• Crown Lane
• Crown Road

Check an address in SM4

Check an address in SM4

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=SM4" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about SM4

What does an SM4 postcode tell you?

That the address lies in the SM4 district of the SM (Sutton) postcode area, and the place OS Open Names most often lists first for its postcodes is Morden. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 581 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 SM4

• SM32.7 km
• SW202.8 km
• SM12.9 km
• CR43.1 km
• KT43.4 km
• SM53.4 km
• SW193.5 km
• KT34.1 km
• SM24.6 km
• SW174.9 km
• SM65.2 km
• SW165.8 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids