UB3 postcode district

Postcodes and sectors

987 of the district's 1,771 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 51.50515, -0.42437, which locates the district, not a building.

Companies registered in UB3

Companies House lists 6,254 companies with a registered office in UB3; 636 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 UB3

• Hillingdon
• Greater London
• London
• Hayes
• Southall

Roads filed under UB3

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 Close
• Abbotswood Way
• Acacia Avenue
• Acorn Grove
• Addison Way
• Albacore Way
• Albert Road
• Albion Road
• Almond Close
• Angel Lane
• Ash Grove
• Ashwood Gardens
• Austin Road
• Avondale Drive
• Badgers Close
• Barra Hall Circus
• Barra Hall Road
• Barra Wood Close
• Bath Road
• Bedwell Gardens
• Beechwood Avenue
• Betam Road
• Bilton Way
• Birchway
• Bishop's Road
• Black Rod Close
• Blair Close
• Bletchmore Close
• Blyth Road
• Bolingbroke Way
• Bolton's Lane
• Boswell Path
• Botwell Common Road
• Botwell Crescent
• Botwell Lane
• Bourne Avenue
• Bourne Circus
• Bourton Close
• Bramley Close
• Brendon Close
• Brickfield Lane
• Browngraves Road
• Burbage Close
• Burnham Gardens
• Bushey Road
• Carfax Road
• Carlton Avenue
• Carnarvon Drive
• Carnation Gardens
• Caroline Place
• Cavalier Gardens
• Cedar Avenue
• Central Avenue
• Chailey Place
• Chalfont Road
• Chamberlain Close
• Cherry Grove
• Chesterfield Way
• Chestnut Close
• Cheviot Close

Check an address in UB3

Check an address in UB3

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=UB3" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about UB3

What does a UB3 postcode tell you?

That the address lies in the UB3 district of the UB (Southall) postcode area, and the place OS Open Names most often lists first for its postcodes is Hayes. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 987 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 UB3

• UB111.7 km
• UB42.6 km
• UB73.1 km
• UB23.2 km
• TW53.6 km
• UB13.7 km
• TW64.2 km
• UB84.8 km
• TW45.1 km
• UB105.3 km
• UB55.4 km
• TW145.8 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids