What does an LL43 postcode tell you?

That the address lies in the LL43 district of the LL (Llandudno) postcode area, and the place OS Open Names most often lists first for its postcodes is Tal-y-bont. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 30 live postcodes.

LL43 postcode district

LL43, in the LL (Llandudno) postcode area, has 30 live and 1 terminated postcodes in the ONS Postcode Directory of August 2026, and OS Open Names files 11 roads under it.

postcode area	LL (Llandudno)
live postcodes	30
terminated postcodes	1
sectors	1
roads listed	11
companies registered	19
centroid	52.77451, -4.09289
directory release	2026-08

Postcodes and sectors

30 of the district's 31 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 52.77451, -4.09289, which locates the district, not a building.

sector	live	terminated
LL43 2	30	1

Companies registered in LL43

Companies House lists 19 companies with a registered office in LL43 (1 October 2026 snapshot).

Places OS Open Names lists for LL43

Gwynedd
Wales
Tal-y-bont
Llanddwywe

Roads filed under LL43

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.

Dorlan Ysgethin
Ffordd Ffridd Isa
Ffordd Glan-Môr
Ffordd Gors
Ffordd Tyddyn Felin
Ffordd Ysegethin
Glanysgethin
Hwlfa Porth Egryn
Llwyn Ynn
Wernfach
Y Brif Heol

Check an address in LL43

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=LL43" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about LL43

What does an LL43 postcode tell you?: That the address lies in the LL43 district of the LL (Llandudno) postcode area, and the place OS Open Names most often lists first for its postcodes is Tal-y-bont. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 30 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 LL43

LL441.8 km
LL455.3 km
LL426.0 km
LL399.0 km
LL469.0 km
LL389.3 km
LL3712.1 km
LL4714.3 km
LL4014.8 km
LL4917.5 km
LL4818.0 km
LL3619.0 km
Every district
How a British address is written
Check any address

distance between the districts' centroids

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