SN1 postcode district

Postcodes and sectors

797 of the district's 1,448 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 51.55585, -1.78523, which locates the district, not a building.

Companies registered in SN1

Companies House lists 3,269 companies with a registered office in SN1; 1,097 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 SN1

• Swindon
• South West
• Stratton St Margaret

Roads filed under SN1

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.

• Abbey Lane
• Akern Street
• Albert Street
• Albion Street
• Alexandra Road
• Alfred Street
• Amber Court
• Ambrose Road
• Andover Street
• Armstrong Street
• Arnhill Road
• Ashford Road
• Avenue Road
• Aviemore Road
• Aylesbury Street
• Bacon Close
• Bankside
• Barbrook Road
• Barwell Avenue
• Bathampton Street
• Bath Road
• Bathurst Road
• Beales Close
• Beckett Strand
• Beckhampton Street
• Belgrave Street
• Belle Vue Road
• Belmont Crescent
• Birch Street
• Blackhorse Way
• Bowling Green Lane
• Bowood Road
• Bradford Road
• Brentfore Street
• Briar Fields
• Bridge Street
• Bristol Street
• Britannia Place
• Broad Street
• Brock End
• Brunswick Street
• Butterworth Street
• Byron Street
• Cambria Bridge Road
• Cambria Place
• Canal Walk
• Cannon Street
• Carfax Close
• Carfax Street
• Carr Street
• Catherine Street
• Celsus Grove
• Celt Close
• Chaddington Strand
• Chandler Close
• Charlotte Mews
• Cheltenham Street
• Chester Street
• Chorister Lane
• Church Place

Check an address in SN1

Check an address in SN1

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=SN1" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about SN1

What does an SN1 postcode tell you?

That the address lies in the SN1 district of the SN (Swindon) postcode area, and the place OS Open Names most often lists first for its postcodes is Swindon. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 797 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 SN1

• SN381.9 km
• SN22.5 km
• SN32.9 km
• SN54.0 km
• SN44.4 km
• SN255.0 km
• SN266.5 km
• SN68.0 km
• SN818.0 km
• SN718.3 km
• GL718.9 km
• SN1119.7 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids