UK Driving Licence Validator
Validate UK Driving Licence Numbers. Enforces structural DVLA standards.
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How UK DLN validation works
The validator cleans input hyphens/spaces and validates total length (exactly 16 characters). It checks if it matches the official regex template (5 letters/9s, birth year decade, month, day, year unit, initials, and overlap letters).
It decodes calendar coordinates from the middle positions to determine birth month, day, and gender mapping, verifying the logical consistency of the licence.