The Inter Departmental Business Register (IDBR) is a structured list of UK businesses. The two main sources of input are the Value Added Tax (VAT) system from Customs & Excise and Pay As You Earn (PAYE) from Inland Revenue. Additional input comes from Companies House, Dun and Bradstreet and the ONS business surveys. This information goes to make up a statistical register comprising 2.1 million businesses, representing nearly 99% of economic activity. Analyses that are produced as part of this service are at the same level at which the business statistical surveys are conducted.