Address
- Street address
- 3918 King's Rd
- City
- Belfast
- Region
- Northern Ireland (NIR)
- Postal code
- BT0 3FH
- Country
- United Kingdom
Random United Kingdom Address Generator
The UK postcode is the most information-dense address component in the world: six or seven characters that narrow delivery to roughly fifteen properties. It is also the hardest to fake convincingly, because the format changes shape depending on which part of the country you are in.
Li Kowalska
Profile
- Full name
- Li Kowalska
- Phone
- +44 7700 900079
- li.kowalska99@example.org
- NI Number
- NK 38 73 45 D
- Occupation
- Project Manager
JSON for this record
{
"countryCode": "GB",
"country": "United Kingdom",
"firstName": "Li",
"lastName": "Kowalska",
"fullName": "Li Kowalska",
"gender": "Female",
"birthday": "19/12/1974",
"birthdayISO": "1974-12-19",
"streetAddress": "3918 King's Rd",
"city": "Belfast",
"state": "Northern Ireland",
"stateAbbr": "NIR",
"zip": "BT0 3FH",
"phone": "+44 7700 900079",
"email": "li.kowalska99@example.org",
"job": "Project Manager",
"company": "Stellar Networks",
"nationalId": "NK 38 73 45 D",
"nationalIdLabel": "NI Number",
"ipv4": "198.51.100.206",
"mac": "E2:B8:AA:8A:FA:0D",
"userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36"
}Test data only. This record describes no real person. Numbers are drawn from ranges reserved so they can never be assigned, and the address is not deliverable. Using synthetic data to impersonate anyone, open or verify an account, or evade identity checks is prohibited — see the terms.
How United Kingdom addresses are structured
Four constituent countries — England, Scotland, Wales and Northern Ireland — subdivided into ceremonial counties and council areas. Royal Mail requires the post town, not the county, on the line above the postcode.
Example layout
Amelia Hughes
42 Church Road
BRISTOL
BS3 4TQ
United Kingdom
42 Church Road
BRISTOL
BS3 4TQ
United Kingdom
- Recipient
- House number and street
- Locality (optional)
- Post town in capitals
- Postcode
- Country
Postcode format
| Local name | postcode |
|---|---|
| Format | Outward code + inward code, 5–7 characters |
| Example | SW1A 1AA |
- The outward code — everything before the space — is a one or two letter area followed by a district number. The inward code is always one digit and two letters.
- Area letters are derived from a nearby town: M for Manchester, EH for Edinburgh, BS for Bristol, SW for south-west London.
- The final two letters never include C, I, K, M, O or V, because those are too easily misread by sorting machines.
- Six valid shapes exist in total, from A9 9AA up to AA9A 9AA. Any regex that assumes one fixed length will reject real addresses.
United Kingdom phone number format
| Country code | +44 |
|---|---|
| Numbering plan | UK National Numbering Plan |
| Example | +44 7700 900123 |
- The national trunk zero is dropped when writing a number internationally: 07700 900123 becomes +44 7700 900123.
- Mobile numbers begin 07. Geographic landlines begin 01 or 02, with the area code length varying from two to five digits.
- Ofcom reserves 07700 900000–900999 for drama and demonstration use, and that is the block every number generated here is drawn from.
National Insurance number
| Identifier | National Insurance number |
|---|---|
| Example shape | ZZ 62 41 08 C |
- Two letters, six digits, then a final letter that is only ever A, B, C or D.
- The first letter is never D, F, I, Q, U or V, and the second is never O.
- HMRC has never allocated the prefixes BG, GB, KN, NK, NT, TN or ZZ. The generator uses only those, so a number passes an NI format check but can never be someone’s real one.
- Written in pairs for readability but stored without spaces.
The identity numbers this page generates match the documented digit pattern so that form validation can be tested. They are not issued numbers, they correspond to no person, and they will not resolve against any authority.
Cities and countries and counties
The generator draws from these cities. Each is paired with the countries and countie it is actually in, and with the postcode prefix that area really uses — so a generated record is internally consistent rather than three unrelated values stuck together.
| City | Countrie | Postcode prefix |
|---|---|---|
| London | England ENG | SW |
| Manchester | England ENG | M |
| Birmingham | England ENG | B |
| Leeds | England ENG | LS |
| Liverpool | England ENG | L |
| Bristol | England ENG | BS |
| Sheffield | England ENG | S |
| Newcastle upon Tyne | England ENG | NE |
| Glasgow | Scotland SCT | G |
| Edinburgh | Scotland SCT | EH |
| Cardiff | Wales WLS | CF |
| Swansea | Wales WLS | SA |
| Belfast | Northern Ireland NIR | BT |
Frequently asked questions
Why does the generated postcode length keep changing?
Because UK postcodes genuinely vary between five and seven characters. A single-letter area with a single-digit district gives you something like M1 1AE, while a two-letter area with a district that includes a letter gives EC1A 1BB. Generating only one shape would misrepresent the format.
Is the postcode matched to the town shown?
The area letters are. Manchester produces an M postcode, Edinburgh an EH, Cardiff a CF, and the constituent country always agrees — you will never see a Manchester address in Wales. The district digit and the inward code are random within the valid alphabet, so the full postcode is not a real delivery point.
What is a post town and why is it in capitals?
The post town is the sorting destination Royal Mail actually routes to, which is not always the same as the town a property sits in. Convention puts it in capitals on the line directly above the postcode.
Can I use these National Insurance numbers to test a payroll form?
For format validation, yes — they match the NI pattern including the restricted final letter. They are also drawn exclusively from prefixes HMRC has never allocated, so they will pass a shape check while remaining permanently unassignable to a real person.