B4 postcode district

Postcodes and sectors

203 of the district's 487 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 52.48528, -1.89267, which locates the district, not a building.

Companies registered in B4

Companies House lists 1,472 companies with a registered office in B4; 633 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 B4

• Birmingham
• West Midlands
• Royal Sutton Coldfield

Roads filed under B4

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.

• Albert Street
• Aston Street
• Bagot Street
• Bath Street
• Belmont Passage
• Belmont Row
• Bull Street
• Cardigan Street
• Carrs Lane
• Clive Passage
• Coleridge Passage
• Coleshill Street
• Colmore Circus Queensway
• Colmore Square
• Corporation Street
• Curzon Street
• Dale End
• Dalton Street
• Dolton Way
• Gopsal Street
• High Street
• Howe Street
• James Watt Queensway
• Jennens Road
• Lancaster Circus Queensway
• Lancaster Street
• Lawson Street
• Legge Street
• Lench Street
• Little Shadwell Street
• Loveday Street
• Minories
• Moland Street
• Moor Street
• Moor Street Queensway
• New Meeting Street
• Newton Street
• Old Snow Hill
• Old Square
• Penn Street
• Pitt Street
• Price Street
• Princip Street
• Printing House Street
• Priory Walk
• Ryder Street
• Shadwell Street
• Snow Hill Queensway
• Staniforth Street
• St Chad's Circus Queensway
• St Chads Queensway
• Steelhouse Lane
• St Mary's Row
• The Priory Queensway
• Vesey Street
• Weaman Street
• Whittall Street
• William Booth Lane
• B4100

Check an address in B4

Check an address in B4

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=B4" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about B4

What does a B4 postcode tell you?

That the address lies in the B4 district of the B (Birmingham) postcode area, and the place OS Open Names most often lists first for its postcodes is Birmingham. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 203 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 B4

• B20.4 km
• B30.8 km
• B11.3 km
• B191.6 km
• B71.7 km
• B51.9 km
• B62.3 km
• B182.3 km
• B122.8 km
• B92.9 km
• B162.9 km
• B153.0 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids