Clean Your UK Data Instantly
The only UK data validation tool that processes everything in your browser. Personally Identifiable Information (PII) never leaves your device - perfect for GDPR compliance. Join our beta to lock in lifetime access to phone numbers, NI numbers, postcodes, bank sort codes, bank account numbers, and name splitting for just £99.99.
Lifetime beta licence covers today's feature set forever. As we add new data types, you'll be first in line to preview them, and we'll use your feedback to shape the roadmap.
What We Clean
HMRC-compliant validation for sensitive UK business data. All processing happens in your browser - no data ever transmitted to our servers.
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
Bank Account Numbers
Validate and format 8-digit UK bank account numbers
Name Splitting
Split full names into title, first name, and last name
Why Businesses Choose Browser-Based Processing
Zero Data Transmission
Unlike cloud-based solutions, your sensitive Personally Identifiable Information (NI numbers, bank sort codes, phone numbers) stays entirely on your device. No upload risks, no data breaches, no third-party exposure.
- No server-side processing costs
- No database scaling concerns
- No compliance documentation needed
Instant Processing
Process data instantly in your browser. No upload wait times, no network bottlenecks. Your browser's processing power handles everything.
- Works with files up to several hundred MB
- No API rate limits
- Export results instantly
Help Shape Simple Data Cleaner
We're in active beta and focused on the core UK data validators you already use daily. Purchase the lifetime licence once, keep access to phone numbers, NI numbers, postcodes, sort codes, bank account numbers, and name splitting forever, and tell us what to improve next.
- Lifetime access to today's feature set (phone numbers, NI numbers, postcodes, sort codes, bank account numbers, name splitting)
- Direct feedback channel with the product team - influence our roadmap
How the beta works
- 1. Purchase the lifetime beta licence One-time £99.99 payment - no renewals. Access stays active for all current validators forever.
- 2. Clean your data securely Run files locally in your browser and see improvements as we ship them.
- 3. Share feedback any time Use our feedback form to report wins, pain points, or custom validator requests.
Powerful Data Cleaning Features
Beyond validation - comprehensive data cleaning tools to prepare your data for use
Duplicate Removal
Automatically detect and remove exact duplicate rows. Keep the first occurrence, remove the rest. Visual preview shows which rows will be removed.
- Exact duplicate detection
- Visual preview before export
- Optional removal on export
Whitespace Cleaning
Remove leading and trailing spaces, and collapse multiple spaces to single spaces across all cells. Ensures consistent formatting throughout your dataset.
- Trim leading/trailing spaces
- Normalize multiple spaces
- Applied to all columns
Multiple Export Formats
Export your cleaned data in CSV, Excel (.xlsx), or JSON format. Choose the format that works best for your workflow, regardless of what you uploaded.
- CSV, Excel, or JSON
- Export only rows with issues
- Optional "Issues" column
Comprehensive Reports
Get detailed HTML reports for issues, cleaned data, and full preview. Exportable, printable, and perfect for sharing with your team or documenting data quality.
- Detailed Issues Report
- Cleaned Data Report
- Full Preview Report
Data Profiling
Automatically analyze your data to identify missing values, duplicate rows, and data quality issues. Get insights before cleaning to understand your data better.
- Missing values detection
- Duplicate row counting
- Summary statistics
Detailed Issues Report
Get comprehensive explanations for every validation issue. See exactly what's wrong, why it's invalid, and how to fix it according to UK standards.
- Specific problem identification
- Clear explanations & guidance
- Exportable HTML reports
Need specialist rules for internal data?
We partner with compliance, ops, and data teams to build in-browser validation for bespoke fields - everything from region_description to staff_employee_number and beyond. Share your edge cases and we'll deliver tailor-made rules that run entirely in your users' browsers, keeping sensitive records on-premise and fully GDPR aligned.
- Custom validators for proprietary fields and internal reference codes
- Browser-based deployment ensures zero data leaves your environment
- Direct collaboration with your domain experts to codify complex rules
How the bespoke process works
- 1. Discovery workshop Share the fields, sample data, and desired outcomes. We map the validation flow together.
- 2. Prototype & testing We build tailored rules inside our client-side engine and iterate with your team.
- 3. Deployment & handover Validated rules are shipped into your Simple Data Cleaner workspace with full documentation.