U.K. Unique Taxpayer Reference Number


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10 digits without spaces and delimiters


10 digits



Keyword Highlighting


When keyword highlighting is supported in the contextual summary for a sensitive information type or a trainable classifier, in the Contextual Summary view of activity explorer, the keywords in a document that were matched to a policy are highlighted.


A DLP policy has medium confidence that it's detected this type of sensitive information if, within a proximity of 300 characters:

  • The function Func_uk_eu_tax_file_number finds content that matches the pattern.
  • A keyword from Keywords_uk_eu_tax_file_number is found.
      <!-- U.K. Unique Taxpayer Reference Number -->
      <Entity id="ad4a8116-0db8-439a-b545-6d967642f0ec" patternsProximity="300" recommendedConfidence="85">
        <Pattern confidenceLevel="85">
          <IdMatch idRef="Func_uk_eu_tax_file_number" />
          <Match idRef="Keywords_uk_eu_tax_file_number" />



  • tax number
  • tax file
  • tax id
  • tax identification no
  • tax identification number
  • tax no#
  • tax no
  • tax registration number
  • taxid#
  • taxidno#
  • taxidnumber#
  • taxno#
  • taxnumber#
  • taxnumber
  • tin id
  • tin no
  • tin#