TW3 postcode district

Postcodes and sectors

787 of the district's 1,622 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 51.46830, -0.36396, which locates the district, not a building.

Companies registered in TW3

Companies House lists 4,978 companies with a registered office in TW3; 418 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 TW3

• London
• Greater London
• Hounslow
• Richmond upon Thames
• Isleworth
• Twickenham

Roads filed under TW3

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.

• Addison Avenue
• Albert Road
• Albion Road
• Alderwick Drive
• Alexandra Gardens
• Alexandra Road
• Alice Way
• Ambassador Close
• Anderson's Place
• Angelfield
• Argyle Avenue
• Argyle Road
• Atcham Road
• Avonwick Road
• Baldwin Gardens
• Balfour Road
• Bath Road
• Beldam Way
• Bell Road
• Bell Square
• Bellview Court
• Benson Close
• Berwyn Avenue
• Birch Close
• Bisley Place
• Brackendale Close
• Bridge Road
• Bristow Road
• Brookwood Road
• Bulstrode Avenue
• Bulstrode Gardens
• Bulstrode Road
• Cambria Close
• Carrington Avenue
• Catherine Gardens
• Cecil Road
• Central Avenue
• Chamberlain Gardens
• Chapel Road
• Charles Street
• Chatsworth Crescent
• Church Close
• Church Stretton Road
• Civic Street
• Clarence Terrace
• Clarke Avenue
• Clipstone Road
• Clovelly Road
• Colwyn Crescent
• Concorde Close
• Coombe Close
• Corban Road
• Cranston Close
• Cromwell Road
• Cromwell Street
• Cross Lances Road
• Crown Yard
• Daines Avenue
• Dalmeny Crescent
• Dean Road

Check an address in TW3

Check an address in TW3

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=TW3" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about TW3

What does a TW3 postcode tell you?

That the address lies in the TW3 district of the TW (Twickenham) 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 787 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 TW3

• TW41.7 km
• TW72.0 km
• TW52.2 km
• TW22.5 km
• TW13.3 km
• UB23.6 km
• TW134.2 km
• TW144.3 km
• TW84.6 km
• TW104.8 km
• TW95.0 km
• TW125.1 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids