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Single Business Identifier
Her Majesty's Revenue and Customs
12 December 2013
Business and economy
Data from Single Business Identifier, includes various identifiers such as the Unique Taxpayer Reference (used Self Assessment & COTAX) / PAYE reference numbers (PAYEREF) / Vat Reference Numbers (VRN). Based on HMRC's Online Registration wizard facility combined with fuzzy matching existing data sources. Updated: monthly (used to be weekly).