TW18 postcode district

Postcodes and sectors

748 of the district's 1,379 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 51.42777, -0.50435, which locates the district, not a building.

Companies registered in TW18

Companies House lists 2,558 companies with a registered office in TW18; 511 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 TW18

• South East
• Surrey
• Spelthorne
• Staines-upon-Thames
• Runnymede
• Egham
• Laleham
• Windsor and Maidenhead

Roads filed under TW18

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 Drive
• Abbot Close
• Acacia Road
• Albany Way
• Albert Drive
• Alexandra Close
• Allyn Close
• Alton Court
• Annie Brookes Close
• Argosy Gardens
• Arnold Road
• Ashford Road
• Ash Grove
• Aspen Close
• Augur Close
• Avenue Road
• Avondale Avenue
• Aymer Close
• Aymer Drive
• Baden Close
• Beechcroft Close
• Beech Tree Lane
• Beechwood Avenue
• Beehive Road
• Belle Vue Close
• Berryscroft Road
• Billet Road
• Bingham Drive
• Birch Green
• Blackett Close
• Blacksmith's Lane
• Blenheim Court
• Boleyn Close
• Booth Drive
• Bowes Road
• Brambledown
• Bramley Close
• Bremer Road
• Bridge Close
• Bridge Street
• Brightside Avenue
• Broadacre
• Budebury Road
• Bundy's Way
• Burges Way
• Carlyle Road
• Cedar Close
• Century Road
• Chandos Road
• Charles Road
• Charter Place
• Cherry Orchard
• Cherry Tree Avenue
• Chertsey Lane
• Chestnut Grove
• Chestnut Manor Close
• Chiltern Close
• Church Close
• Church Street
• Claremont Road

Check an address in TW18

Check an address in TW18

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=TW18" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about TW18

What does a TW18 postcode tell you?

That the address lies in the TW18 district of the TW (Twickenham) postcode area, and the place OS Open Names most often lists first for its postcodes is Staines-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 748 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 TW18

• TW193.0 km
• TW153.2 km
• TW203.4 km
• TW175.1 km
• KT165.2 km
• GU255.6 km
• TW66.1 km
• TW166.2 km
• TW146.4 km
• KT157.1 km
• TW137.2 km
• KT137.7 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids