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What are ISBNs and why do you need them?
The International Standard Book Number (ISBN) is a unique product identifier for books and related material. Whilst it is not a legal requirement to allocate ISBNs to your books, it is used by publishers, booksellers and libraries for ordering, listing and stock control purposes. It enables them to identify a particular publisher and allows the publisher to identify a specific edition of a specific title in a specific format within their output. Systems used by publishers, booksellers and libraries all rely on the ISBN to identify books ensuring they select and stock the correct title and edition.
To buy ISBNs from this site, you must be based in the UK, Ireland or a British Overseas Territory. If you are publishing elsewhere, you can find your national ISBN Agency on the International ISBN Agency’s website here
If you are going to publish only one book in only one format, the single ISBN will be enough. If you plan to publish more than one book, or to publish a revised edition of the original, or if you are going to publish your book in different formats (such as paperback and e-book), you will need a different ISBN for each version and each format, so ten ISBNs would be more suitable. Unused ISBNs remain valid indefinitely.
For more information please read our ISBN FAQs
All prices are inclusive of UK Standard Rate Value Added Tax.
If you want to purchase larger quantities or to discuss your requirement in more detail, please email us at firstname.lastname@example.org
Publications that are monographic (one-off publications, not periodicals or serials), text-based (or predominantly text-based) and available to the public are considered eligible within the scope of the ISBN Standard.
Examples of the types of publication that qualify for ISBN:
Any publication that is without a defined end should not be assigned an ISBN. For example, publications that are regularly updated and to continue indefinitely (such as journals, serials, magazines, newspapers, updating loose-leafs, updating websites) are ineligible for ISBN.
Some examples of products that do not qualify for ISBN: