Mock CSV Data for the United Kingdom
When testing UK-facing software you need data that *looks* British: SW1A 1AA postcodes, prices in £, +44 phone numbers, names like Oliver, Charlotte, Mohammed. Generic US-format mock data fails validators built around UK formats. CSV.si generates UK-localized rows you can drop straight into your tests.
What UK data should look like
- Postcodes: alphanumeric, like
SW1A 1AAorM1 1AE— two parts separated by a space.
- Phone numbers:
+44 20 7946 0958(London landline),+44 7700 900123(mobile).
- Currency: £ with comma thousands separator and dot decimal —
£1,234.56.
- Addresses: building number then street, then town, then postcode —
12 Baker Street, London, NW1 6XE.
Generating it in CSV.si
Open the generator, add columns for name, email, phone, address, and amount. Set the row count, click Download — you get a UTF-8 CSV that opens cleanly in UK Excel (which uses comma as decimal in some locale settings — verify your template).
Use cases
Populating a Royal Mail address validator's test inputs, seeding a Companies House clone, building demo dashboards for UK fintechs, or stress-testing GDPR-compliant CRMs with realistic-but-fake EU residents.
Frequently asked questions
Are the postcodes real?
They're format-valid but not tied to real addresses — safe for tests, not for sending physical mail.
Does CSV.si include Northern Ireland?
BT-prefixed postcodes are part of the UK set.