Clean Your UK Data Instantly
Upload your CSV file and we'll automatically clean and format your UK phone numbers, NI numbers, postcodes, and bank sort codes.
🔒 100% Private - All processing happens in your browser. Your data never leaves your device!
What We Clean
Phone Numbers
Format UK mobile and landline numbers with proper spacing
NI Numbers
HMRC compliant validation with proper formatting
Postcodes
Validate and format UK postcodes correctly
Sort Codes
Format bank sort codes with proper hyphens