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Expressions by User

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Title Test Details Pattern Title
Expression
^([GB])*(([1-9]\d{8})|([1-9]\d{11}))$
Description
Simple check of valid UK VAT Registration numbers. The standard format for UK VAT number must be 9 characters long or 12 characters if a branch trader. The GB prefix has been included as optional, but technically you should include it. The UK VAT format also includes Government Departments and Health Authorities, but I have excluded them for the moment.
Matches
123456789 | GB123456789 | GB123456789123
Non-Matches
dfddf | 3443443 | 34 34 3344
Author Rating: Not yet rated. Ben Powell
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