Last reviewed by Robert Prime — May 2026

Quick Answer: UK law (Legal Deposit Libraries Act 2003) requires every published book to send one print copy to the British Library within one month of publication — Boston Spa, Wetherby, LS23 7BY. The five other legal deposit libraries (Bodleian, Cambridge, NLS, Trinity Dublin, NLW) only get a copy if they request. KDP and other print-on-demand services do NOT deposit on your behalf. Compliance cost: one author copy + postage.

Want the full reasoning cases? Keep reading — TL;DR below for the slightly longer summary, then the full guide.

We work with UK indie authors at publishing.co.uk and see these questions every week — the answers below reflect what actually applies in 2026.

Table of Contents

• What legal deposit is
• Who has to comply
• The British Library (mandatory)
• The other five legal deposit libraries (on request)
• How to send your book
• Digital legal deposit for ebook-only authors
• What about KDP Print and IngramSpark?
• What happens if you don’t comply
• Why it’s worth doing anyway
• Frequently asked questions
• Final thoughts

What legal deposit is

Legal deposit is a centuries-old principle that every book published in the UK should be preserved in the national libraries for future generations. The modern statutory framework is the Legal Deposit Libraries Act 2003, which updated older provisions in the Copyright Act 1911.

It works like this: when you publish a book in the UK, you must send one copy to the British Library. The other five legal deposit libraries (covering the rest of the UK and Ireland) may request a copy from you within one year of publication.

This is not optional. It’s a statutory duty on publishers, including self-publishers.

It is also lightly enforced in practice — but I’ll cover that further down.

Who has to comply

The Act applies to any publication “issued to the public in the United Kingdom” — including books, magazines, newspapers, journals, music scores, and certain digital publications.

For our purposes (UK self-published author):

• You publish a paperback that’s available for sale in the UK → you must comply
• You publish a paperback that’s available worldwide including the UK → you must comply
• You publish a hardback → same — counts as a print publication
• You publish a free print run for friends and family that’s not commercially distributed → grey area; technically still publication if you’ve made it available; in practice nobody enforces
• You publish a Kindle-only ebook → covered by separate digital deposit (covered below)
• You publish an audiobook → not covered by legal deposit (currently)

The duty falls on the publisher. As a self-publisher, that’s you.

The British Library (mandatory)

You must send one copy of every print publication to the British Library within one month of publication. Section 1 of the LDLA 2003. No request needed — automatic.

The address:

Legal Deposit Office The British Library Boston Spa Wetherby West Yorkshire LS23 7BY United Kingdom

(Confirm the current legal-deposit address and postcode at bl.uk/services/legal-deposit before posting — routing details occasionally change.)

Note (May 2026): Following a cyber-attack on the British Library in late 2023, the electronic legal-deposit publisher portal has been periodically unavailable while systems are rebuilt. If you’re depositing digital publications and the standard portal is offline, check bl.uk/services/legal-deposit for the current alternative submission route. Print deposit by post (the Boston Spa address above) has been unaffected throughout.

Send by recorded delivery or signed-for post. The British Library does NOT acknowledge receipt automatically (with hundreds of thousands of items per year, they can’t), but you’ll have your proof-of-postage receipt.

Send the same edition as you commercially publish. Not a marked-up advance copy. Not a proof. The final published version.

Their preferred format is your standard published format — paperback, hardback, whichever you sell. If you publish both, send both.

The other five legal deposit libraries (on request)

The Legal Deposit Libraries Act 2003 names six legal deposit libraries:

1. The British Library — the one mandatory deposit (above)
2. The Bodleian Libraries, Oxford
3. Cambridge University Library
4. National Library of Scotland (Edinburgh)
5. The Library of Trinity College Dublin
6. The National Library of Wales (Aberystwyth)

Libraries 2-6 may request a copy of any published work, but only within one year of publication. If they don’t request, you don’t have to send.

Most major commercial publishers send all six automatically because they have a relationship and infrastructure for it. Self-publishers usually send only to the British Library and wait to see if any of the others request.

In practice, requests to self-publishers are uncommon. Where they happen, a national library is generally more interested in works relevant to its nation (for example, Scottish or Welsh content) and the academic deposit libraries in scholarly works — but these are general tendencies, not fixed rules.

If you receive a written request from one of these libraries, you have one month from receipt to send the requested copy. Same address format as the British Library — each library publishes its own legal deposit address.

The Agency for the Legal Deposit Libraries — based in Edinburgh — coordinates requests on behalf of all five non-BL libraries. Some publishers send to the Agent and let them distribute; for self-publishers it’s usually simpler to wait for a direct request.

Agency for the Legal Deposit Libraries:

Agency for the Legal Deposit Libraries Unit 21 Marnin Way Edinburgh EH12 9GD United Kingdom

(Addresses change — confirm the Agency’s current address at legaldeposit.org.uk before posting.)

How to send your book

The minimum:

1. One copy of your published book — the same edition that’s on sale
2. Cushioned envelope or jiffy bag (avoid bare card)
3. Send to the British Library address above
4. Use Royal Mail Signed For 2nd Class or similar — you want a tracking number for your records
5. No cover letter required, but a slip with your book’s title, author date is helpful for their cataloguing team

Cost: a few pounds per book in postage, depending on size, weight and current Royal Mail rates. One-off, per title, per edition.

Some self-publishers send a brief covering note like:

Dear Legal Deposit Office,

I am the self-publisher of the enclosed work and am depositing this copy as required under the Legal Deposit Libraries Act 2003.

Title: [Your Book Title]
Author: [Your Full Name]
ISBN: [13-digit ISBN]
First publication date: [Date]
Publisher: [Your imprint or your name]

Yours sincerely,
[Your name]

Not required, but it makes their cataloguing slightly easier.

Digital legal deposit for ebook-only authors

The Legal Deposit Libraries (Non-Print Works) Regulations 2013 brought digital publications into scope. If you publish a Kindle-only or EPUB-only book, you may be required to make it available for legal deposit through the Agency for the Legal Deposit Libraries’ Digital Legal Deposit system.

Here’s where it gets administratively interesting for self-publishers:

• The system is designed primarily for publishers with substantial digital catalogues using bulk submission
• For one-off self-published ebooks, no automatic submission tool exists
• The libraries have a harvesting approach for many digital works — they crawl publishers’ websites and Amazon-listed works periodically

In practice, this means:

• If your ebook is on Amazon KDP, the libraries may pick it up via their harvesting, but there’s no obligation on Amazon to push it
• If you publish via your own website with EPUB downloads, the libraries can be requested to harvest your site
• The legal duty exists, but compliance for individual ebook self-publishers is light

If you want to be conscientious, contact the Agency for the Legal Deposit Libraries at the Edinburgh address above and ask how to register your work. They have a process for individual publishers.

What about KDP Print and IngramSpark?

A common question: “If Amazon prints my book on demand, do they deposit it?”

No. KDP, IngramSpark print-on-demand services do NOT handle legal deposit on your behalf. They are printers/distributors, not publishers in the legal sense. The legal deposit duty stays with you, the author-publisher.

This means:

1. Order one author’s copy of your finished paperback (KDP allows author copies at cost — the exact price depends on page count, trim size and interior type)
2. Send it to the British Library

Don’t try to use a proof copy or an early uncorrected version. Send the version that’s actually on sale.

For Amazon KDP, you can get the author-copy ordering URL inside your KDP dashboard. IngramSpark similarly allows author copies through the Lightning Source workflow.

What happens if you don’t comply

Honest answer: in practice, very little, for individual self-publishers.

The British Library holds one of the world’s largest collections and receives a very high volume of new items each year. They do not have the staff to actively chase down every self-published indie title not deposited. Self-publishers who never deposit rarely receive a follow-up.

That said:

• The statutory duty is real. Failure to comply is a breach of statute.
• The Act provides for a fine as the penalty for non-compliance — but the threshold for enforcement is high
• The Library is more likely to follow up if your book has substantial press coverage, library demand, or comes to their attention through book trade databases like Nielsen

You won’t get a knock on the door. You may get a polite letter much later. Most self-publishers who don’t deposit get neither.

This is mentioned for completeness — but it’s not a recommendation to skip the deposit.

Why it’s worth doing anyway

A few non-trivial reasons UK self-publishers should comply even though enforcement is light:

1. Permanent preservation. Your book is held in perpetuity in the national collection. Whatever the commercial life of your book, the British Library’s copy outlasts you.

2. The catalogue makes you findable. The British Library catalogue is publicly searchable. UK academic institutions, journalists, family historians, and researchers find books through it.

3. Discoverability. Presence in the national bibliography makes your book easier for researchers and librarians to find. (Note: public libraries buy stock through wholesalers and bibliographic databases such as Nielsen, so legal deposit is about preservation and discoverability rather than a direct route to library sales.)

4. Documentation of publication date. A British Library catalogue entry with your book’s publication date provides reliable third-party evidence of when your book was published. This can be useful in copyright disputes.

5. It’s £3-£5 of postage and one author copy. Even at the most cynical reading, the cost-benefit favours doing it.

A small thing worth knowing: when self-publishers do deposit, the book typically appears in the British Library catalogue at catalogue.bl.uk anywhere from a few months to a year later (cataloguing backlogs vary). Finding your own self-published book listed in the national catalogue, with a shelfmark, alongside everything else published in the UK that year, is genuinely worth more than the £3.50 in postage. Many indie authors don’t realise their book can be in the BL catalogue — it can.

6. It’s a small contribution to the UK’s literary heritage. Self-published or not, your book joins the national record. Future researchers in 2150 will have access to it.

Related guides

• Self-publishing tax (UK)
• Ltd company vs sole trader
• Copyright basics (UK)
• ISBN vs copyright (UK)
• What you can quote (UK fair dealing)

Frequently asked questions

Do I deposit every print run, or only the first edition?

Every separate edition (with a new ISBN). Reprints of the same edition do not need to be re-deposited. If you do a substantial revision and assign a new ISBN, deposit a new copy.

Do I have to send a hardback if my book is in both?

If you publish in both paperback and hardback, the BL would prefer both — the hardback is more durable for archival use. In practice, sending one in your preferred standard format is the minimum and is widely accepted.

What if my book is print-on-demand and there’s no “first run” — when is publication?

The publication date is the date your book first becomes available to the public, regardless of whether copies have actually been printed. For KDP and similar print-on-demand systems, this is typically the date your book “goes live” on Amazon. You then have one month from that date.

Does my book need to be commercial — or do private printings count?

The Act covers any work “issued to the public.” If you genuinely only printed copies for personal use (gifts to family, no commercial intent, not on Amazon), this is not “issuing to the public” and you’re outside the duty. The moment it goes on sale anywhere, you’re in.

What if I publish abroad first?

If your book is published in the UK at any point — even months after it’s first published elsewhere — you’re within scope from the UK publication date.

Do I deposit translations?

If you publish a UK English translation of a foreign-language book, the UK English translation has a new copyright and is a new publication for legal deposit purposes. Deposit one copy.

Will the British Library acknowledge receipt?

Not routinely. Your proof of postage is your record. The book will appear in the catalogue (at catalogue.bl.uk) typically within 3-12 months of receipt — depending on cataloguing backlogs.

Can I claim the deposit copy on my tax return?

Yes, if you’re trading as a self-publishing business. The author copy plus postage is a business expense.

What if a library requests a copy and I’m sold out?

You’re still obliged to send a copy within one month of receiving the request. Order another author copy, deposit it. If the book is genuinely out of print, send a letter explaining and offer a digital copy or photocopy — the library will usually accept.

Are children’s books, picture books, or fixed-layout EPUBs treated differently?

Same rules for print picture books — deposit one copy. Fixed-layout EPUBs fall under the digital deposit framework (1) — typically harvested rather than actively deposited.

Final thoughts

UK legal deposit is one of the smaller, less-discussed administrative obligations of self-publishing. It costs you the price of an author copy plus postage. It places your work in the national record. And it’s a statutory requirement that most self-publishers either don’t know about or ignore.

If you publish in print: order an author copy, post it to the British Library at Boston Spa within a month of publication. Done.

If you publish in ebook only: contact the Agency for the Legal Deposit Libraries in Edinburgh; for low-volume self-publishers, harvesting usually covers you.

For the broader copyright context, see our UK copyright hub. For the front-matter that goes alongside the deposit copy, see our copyright page template.

When you’re ready to publish, run a free KDP Readiness Score on your final PDF — catches the things you’d rather catch before you print the deposit copy.

— Robert publishing.co.uk