Postal-prefix test records - synthetic suffix
United Kingdom Address Generator
UK-format test addresses using source-listed localities and outward postcode districts. The inward postcode segment and street are generated for testing, not looked up in Royal Mail delivery-point data.
Source-matched postal prefix. Street and remaining postcode characters are synthetic, not delivery-verified.
United Kingdom Address Format
The outward segment identifies a postcode district and varies in length. A space separates it from an inward segment containing one digit and two letters. The formatted result places the locality above the full test postcode. The selector groups the source records under England, Scotland, Wales and Northern Ireland; these are not postal counties.
250 Test Meadow Road AB KETTLEBY LE14 2GG UNITED KINGDOM
Synthetic format example, not a delivery address. The street or box line is generated test data.
UPU United Kingdom addressing reference. This reference documents postal layouts, not the validity of generated addresses.
United Kingdom Source Coverage
- Retained source rows
- 27,346
- Locality labels by area
- 23,814
- Covered source groups
- 4
The standard GeoNames GB download supplies outward codes only. This implementation does not redistribute the separate full-postcode download or claim that its generated inward segment is assigned. Source locality labels are not certified Royal Mail post towns. Special codes that do not fit the supported outward patterns are excluded rather than forced into a normal district.
Included country groups
- England: 18,845 source rows
- Northern Ireland: 417 source rows
- Scotland: 5,991 source rows
- Wales: 2,093 source rows
Counts describe this imported subset, not a national completeness percentage. A locality label may occur in more than one source group. Exact duplicates are removed; unsupported or inconsistent records are omitted, not repaired with guessed geography.
United Kingdom Form-Testing Cases
UK forms need to accept short and long outward segments, normalize the separating space and preserve letters. Testing an ordinary district format is different from validating a deliverable address. Do not reject a real UK address just because its special postcode is absent from this limited generator.
Generated records are for development, QA and demonstrations. They must not be used for mail delivery, identity checks, account verification or proof of residence. A synthetic result can coincidentally resemble an existing address; it is not guaranteed to be nonexistent.
Data and Attribution
Geographic data: GeoNames GB postal export, reused under CC BY 4.0. Downloaded 2026-09-05. The source provides no guarantee of accuracy, timeliness or completeness.
Postal-place relationships are retained from individual source rows, without mixing localities and codes independently. Coordinates, population figures and unrelated gazetteer fields are not included in the browser data.
United Kingdom Address FAQ
Is the generated full UK postcode real?
Only the outward district comes from the source row. The inward segment is synthetic. A code can have the expected shape without being assigned to the generated street, so it is explicitly a test postcode.