SE23 postcode district

Postcodes and sectors

625 of the district's 1,082 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 51.44152, -0.04908, which locates the district, not a building.

Companies registered in SE23

Companies House lists 2,123 companies with a registered office in SE23; 57 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 SE23

• London
• Greater London
• Lewisham
• Southwark

Roads filed under SE23

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.

• Ackroyd Road
• Acorn Way
• Agnew Road
• Alexander Evans Mews
• Allenby Road
• Amroth Close
• April Glen
• Austin Close
• Aylward Road
• Ballina Street
• Bampton Road
• Beadnell Road
• Beaumaris Mews
• Benson Road
• Bird-in-Hand Passage
• Blythe Vale
• Boveney Road
• Bovill Road
• Bowmans Lea
• Brockley Park
• Brockley Rise
• Brockley View
• Buckingham Lane
• Buckley Close
• Buckstone Close
• Cadley Terrace
• Canonbie Road
• Carholme Road
• Carters Lane
• Catling Close
• Century Yard
• Church Rise
• Church Vale
• Churchwood Gardens
• Cibber Road
• Cleeve Hill
• Clyde Terrace
• Clyde Vale
• Coach House Mews
• Codrington Hill
• Colfe Road
• Como Road
• Courtrai Road
• Cox's Walk
• Cranston Road
• Crowmarsh Gardens
• Dacres Road
• Dalmain Road
• Dartmouth Place
• Dartmouth Road
• David's Road
• Deans Gate Close
• Derby Hill
• Derby Hill Crescent
• Desmond Tutu Drive
• Devonshire Road
• Duncombe Hill
• Dunoon Road
• Ebsworth Street
• Eliot Bank

Check an address in SE23

Check an address in SE23

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=SE23" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about SE23

What does an SE23 postcode tell you?

That the address lies in the SE23 district of the SE (South East London) 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 625 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 SE23

• SE261.6 km
• SE222.2 km
• SE62.3 km
• SE42.4 km
• SE212.8 km
• SE203.3 km
• SE133.4 km
• SE153.7 km
• SE193.7 km
• SE143.9 km
• SE273.9 km
• SE243.9 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids