TW9 postcode district

Postcodes and sectors

597 of the district's 1,405 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 51.46962, -0.29235, which locates the district, not a building.

Companies registered in TW9

Companies House lists 3,970 companies with a registered office in TW9; 1,624 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 TW9

• Richmond upon Thames
• Greater London
• London

Roads filed under TW9

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.

• Adelaide Road
• Alexandra Road
• Alton Road
• Arne Lane
• Ashley Road
• Atwood Avenue
• Bardolph Road
• Barker Close
• Beaumont Avenue
• Beechwood Avenue
• Benns Walk
• Bessant Drive
• Bicester Road
• Blake Mews
• Blue Anchor Alley
• Braddon Road
• Branstone Road
• Brewers Lane
• Brick Farm Close
• Bridge Street
• Broad Walk
• Broomfield Road
• Brotherstone Walk
• Burdett Road
• Burlington Avenue
• Bush Road
• Bushwood Road
• Cambridge Cottages
• Cambridge Road
• Castlegate
• Catherine Drive
• Cedar Terrace
• Chaucer Avenue
• Chelwood Gardens
• Chilton Road
• Church Court
• Church Walk
• Clarence Road
• Clarence Street
• Clifford Avenue
• Courtlands Avenue
• Crofton Terrace
• Crown Terrace
• Cumberland Road
• Dancer Road
• Darell Road
• Dee Road
• Defoe Avenue
• Drummonds Place
• Dudley Road
• Duke Street
• Duncan Road
• Dunstable Road
• Elizabeth Cottages
• Elsinore Way
• Ennerdale Road
• Eton Street
• Evelyn Gardens
• Evelyn Road
• Evelyn Terrace

Check an address in TW9

Check an address in TW9

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=TW9" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about TW9

What does a TW9 postcode tell you?

That the address lies in the TW9 district of the TW (Twickenham) postcode area, and the place OS Open Names most often lists first for its postcodes is Richmond upon Thames. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 597 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 TW9

• SW141.8 km
• TW82.2 km
• TW102.5 km
• TW73.0 km
• TW13.1 km
• W43.1 km
• SW133.5 km
• SW154.6 km
• W54.9 km
• W34.9 km
• TW35.0 km
• TW25.0 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids