TW4 postcode district

Postcodes and sectors

428 of the district's 740 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 51.46546, -0.38798, which locates the district, not a building.

Companies registered in TW4

Companies House lists 3,364 companies with a registered office in TW4; 508 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 TW4

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

Roads filed under TW4

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.

• Alliance Close
• Amberley Way
• Amelia Close
• Arundel Road
• Ashton Gardens
• Aston Green
• Atherley Way
• Avondale Gardens
• Badger Close
• Barrack Road
• Basildene Road
• Beaulieu Close
• Beavers Crescent
• Beavers Lane
• Belgrave Road
• Benham Gardens
• Bennett Close
• Beresford Gardens
• Berkeley Avenue
• Berry Court
• Beverley Avenue
• Blackburn Way
• Blackrurn Way
• Bodicea Mews
• Bowness Drive
• Bramley Way
• Bristol Close
• Broad Walk
• Brompton Close
• Burnham Gardens
• Byron Avenue
• Cambridge Close
• Cambridge Road
• Canham Gardens
• Cardington Square
• Carisbrooke Close
• Causeway
• Cavalry Crescent
• Cedar Road
• Charter Crescent
• Chaucer Avenue
• Chester Road
• Chinchilla Drive
• Clare Road
• Clifford Road
• Cobb's Road
• Connaught Avenue
• Conway Road
• Corfe Close
• Corporation Avenue
• Cranbrook Road
• Crestwood Way
• Curtis Road
• Dalcross Road
• Dale Avenue
• Daniel Close
• Dawn Close
• Dorney Way
• Drayton Close
• Dukes Avenue

Check an address in TW4

Check an address in TW4

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=TW4" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about TW4

What does a TW4 postcode tell you?

That the address lies in the TW4 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 428 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 TW4

• TW31.7 km
• TW51.9 km
• TW142.7 km
• TW133.1 km
• TW23.2 km
• TW73.7 km
• UB23.9 km
• TW64.2 km
• TW14.6 km
• TW124.9 km
• UB35.1 km
• UB15.6 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids