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What is an ISBN?

The International Standard Book Number (ISBN) is a 13 digit unique identifier for a book or title, and is used as the reference for cataloguing, ordering, stock control, billing and accounting. Basically, it’s the way that your title will be known to book buyers and sellers, and has to be used to distinguish it from others.

If you have any questions, please feel free to contact us.

How do you get an ISBN?

Nielsen BookData UK is the ISBN Agency for the UK and Republic of Ireland and it is from here that all the ISBN numbers must be purchased. If you would like to go directly to Nielsen, then a minimum of ten ISBNs would be issued and you are then able to assign one to your book.

If you do not wish to purchase this many, then you could take advantage of our relationship with Nielsen BookData UK and purchase one from us. As a publisher, we are able to obtain ISBN Prefixes from Nielsen and therefore have a direct relationship with over 40,000 publishers, booksellers and libraries in 110 countries throughout the world and access to the most up to date and comprehensive databases.

If you have any questions, please feel free to contact us.


  • Allocates ISBN Publisher Prefixes.
  • Advises publishers on how to use ISBNs correctly.
  • Collates and maintains a database of publishers and theinclusion of prefixes within the Publishers International ISBN Directory.
  • Encourages ISBN listing with bibliographic agencies.
  • Nielsen BookScan is the world’s only continuous retail monitoring service for English language books in the UK, Ireland, US, Italy, Spain, Denmark, South Africa, Australia and New Zealand.
  • Provides marketing information, audience measurement,and business media products and services.
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