BN18 postcode district

Postcodes and sectors

588 of the district's 743 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 50.84550, -0.59035, which locates the district, not a building.

Companies registered in BN18

Companies House lists 992 companies with a registered office in BN18; 98 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 BN18

• West Sussex
• South East
• Arun
• Yapton
• Arundel
• Walberton
• Fontwell
• Horsham
• Amberley
• Ford
• Slindon
• Warningcamp
• Slindon Common
• Tortington
• Wepham
• Crossbush
• Cross Gate
• Burpham
• Bilsham
• Binsted
• Avisford
• Madehurst
• Houghton
• Poling

Roads filed under BN18

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.

• Abbots Field
• Alfred Day Lane
• Anne Howard Gardens
• Anvil Close
• Apricot Place
• Armitage Close
• Arun Close
• Arundel Relief Road
• Arundel Road
• Arun Ford Close
• Arun Street
• Avisford Park Road
• Ayling Crescent
• Bakers Arms Hill
• Barge Close
• Barley Lane
• Barnham Lane
• Baycombe Lane
• Beagle Drive
• Beam Close
• Belmont Terrace
• Bernard Road
• Beverley Close
• Billsborough Lane
• Bilsham Lane
• Bilsham Road
• Binsted Lane
• Birch Close
• Bittern Avenue
• Blackbird Road
• Blackfriars Lane
• Blakehurst Lane
• Blenheim Road
• Bond Street
• Boniface Close
• Brambling Close
• Brewery Hill
• Briar Close
• Bridle Lane
• Britten's Lane
• Bullfinch Grove
• Burch Grove
• Burndell Road
• Bury Hill
• Butt Lane
• Canada Road
• Canal Road
• Canon Road
• Chaffinch Gardens
• Charles Square
• Cherry Avenue
• Chichester Road
• Church Hill
• Church Lane
• Church Road
• Church Street
• Church View
• Cinders Lane
• Clay Lane
• Cobham Close

Check an address in BN18

Check an address in BN18

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=BN18" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about BN18

What does a BN18 postcode tell you?

That the address lies in the BN18 district of the BN (Brighton) postcode area, and the place OS Open Names most often lists first for its postcodes is Yapton. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 588 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 BN18

• BN174.9 km
• PO226.4 km
• BN167.5 km
• PO2110.2 km
• BN1211.8 km
• BN1312.6 km
• PO1913.2 km
• RH2013.3 km
• BN1414.7 km
• PO2015.0 km
• BN1115.4 km
• PO1816.0 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids