Nielsen is the leading provider of information, transaction and sales analysis services and also runs the Registration Agencies: SAN, ISTC and the ISBN Agency for UK & Ireland.
Nielsen collects and aggregates English-language book data (print and digital) from publishers and disseminates the information via a range of services to customers worldwide.
Nielsen Registration Agencies provide unique identifiers for books and publishers and vital location numbers which help the book industry trade efficiently.
Nielsen BookData Information Services provide search and selection tools for booksellers and libraries, for purchasing, cataloguing and OPAC and website enrichment.
Nielsen BookNet Transaction Services allow partners of all sizes and locations to trade electronically via a unique range of services from order routing, online ordering, and EDI business messaging.
Nielsen BookScan Retail Sales Analysis Service is the world's largest market measurement and analysis service, tracking retail sales data in nine key markets. Nielsen BookScan also measures library borrowings and is developing an e-book panel and chart.