Data Validation
See how we validate UK phone numbers, postcodes, NI numbers, sort codes, and email addresses according to UK standards.
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A sample dataset with UK phone numbers, NI numbers, postcodes, sort codes, emails, and names. You’ll pick columns, clean, then export — all in your browser.
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example-data.csv
Sample dataset loaded
Pick which columns contain UK data to validate. Use Auto-Select to detect phone, NI, postcode, sort code, email, and name columns automatically.
Choose how you want phone numbers formatted in the output
Add your own domain typo fixes (e.g. my-orgcom → myorg.com). One per line: typo → correct or typo=correct.
Total Rows
0
Valid
0
Cleaned
0
Issues
0
Sample of validated fields (prioritizes rows where values were changed)
| Row | Column | Original | Cleaned |
|---|
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See how we validate UK phone numbers, postcodes, NI numbers, sort codes, and email addresses according to UK standards.
Explore comprehensive HTML reports showing issues, cleaned data, and full previews with explanations.
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Download cleaned data in CSV, Excel, or JSON format. Filter to only rows with issues if needed.