SM3 postcode district

Postcodes and sectors

379 of the district's 529 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 51.37129, -0.21625, which locates the district, not a building.

Companies registered in SM3

Companies House lists 2,334 companies with a registered office in SM3; 748 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 SM3

• London
• Greater London
• Sutton
• Morden
• Merton
• Epsom and Ewell
• Surrey
• South East

Roads filed under SM3

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.

• Abbotts Road
• Acacia Drive
• Alcorn Close
• Aldrich Gardens
• Anderson Close
• Anne Boleyn's Walk
• Ardleigh Gardens
• Ashmere Close
• Ash Road
• Barrington Road
• Beeches Road
• Beechmore Gardens
• Brocks Drive
• Burleigh Road
• Buxton Crescent
• Camberley Close
• Carlton Crescent
• Carmel Close
• Caversham Avenue
• Chartwell Gardens
• Chartwell Place
• Chatham Close
• Chatsworth Road
• Cheam Park Way
• Chelsea Gardens
• Chertsey Drive
• Church Farm Lane
• Church Hill Road
• Church Road
• Claymore Close
• Cookes Lane
• D'arcy Road
• Dallas Road
• Egham Close
• Egham Crescent
• Elm Road West
• Esher Avenue
• Ewell Road
• Fieldsend Road
• Fir Road
• Fir Walk
• Forest Road
• Forge Lane
• Four Seasons Crescent
• Foxton Way
• Frogmore Close
• Frogmore Gardens
• Fromondes Road
• Gillian Park Road
• Glenthorne Close
• Glenthorne Gardens
• Hamilton Avenue
• Hanover Close
• Haslam Avenue
• Hayes Crescent
• Hemingford Road
• Henley Avenue
• High Street
• Hilbert Road
• Hill Top

Check an address in SM3

Check an address in SM3

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=SM3" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about SM3

What does an SM3 postcode tell you?

That the address lies in the SM3 district of the SM (Sutton) postcode area, and the place OS Open Names most often lists first for its postcodes is London. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 379 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 SM3

• SM11.7 km
• KT42.0 km
• SM22.5 km
• SM42.7 km
• SM53.3 km
• KT174.0 km
• KT34.3 km
• KT194.3 km
• SW204.5 km
• SM65.1 km
• KT55.3 km
• CR45.4 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids