Jonathan Nowell is President of Nielsen Book, part of Nielsen. Jonathan’s responsibilities include the strategic development of the book information businesses of Nielsen. Nielsen Book operates in the U.S., U.K. and several other countries, and it includes the ISBN Agency for U.K. and Ireland, the SAN and ISTC Agencies, BookData, BookNet and BookScan product groups. These brands provide market-leading information and transaction services to booksellers, publishers and libraries worldwide. Prior to his appointment to his current role in 2002, Jonathan was Managing Director of Whitaker, the U.K.-based book information group and Publisher of The Bookseller.