British Library

• 1. Introduction

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  The British Library holds an estimated collection of over 200 million items, drawn from multiple countries and spanning formats from clay-era manuscripts to web pages. Based in London, it is the national library of the United Kingdom, and one of the largest libraries anywhere. Its oldest holdings reach back to 2000 BC. Each year it adds some three million items, filling 9.6 km of fresh shelf space. How does an institution that automatically receives a copy of nearly everything published in a country keep growing without drowning? Where does it put 200 million things, and who decides what survives the fluidity of the internet? And what happens when a library this large goes dark overnight? The answers run through a Yorkshire ordnance factory, a six-storey glass tower, a robot-served vault, and a ransomware attack that silenced the whole catalogue.

• 2. Born From The Museum

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  On the 1st of July 1973 the British Library came into existence, carved largely out of the British Museum, which supplied the bulk of the new library's holdings. Smaller bodies were folded in alongside it: the National Central Library, the National Lending Library for Science and Technology, and the British National Bibliography. The merging did not stop there. In 1974 the library took over functions once held by the Office for Scientific and Technical Information. In 1982 the India Office Library and Records and the HMSO Binderies became its responsibilities. In 1983 it absorbed the National Sound Archive, which holds many sound and video recordings, with over a million discs and thousands of tapes. The deeper roots of its historical collections lie in 18th-century donations and purchases known as the foundation collections. Among them are the books and manuscripts of Sir Hans Sloane, who died in 1753, and whose decision to give his library and natural history collection to the nation led to the British Museum itself. The museum's trustees also bought the Harleian Library of Robert Harley, who died in 1721, for ten thousand pounds. The Cotton library, gathered by Sir Robert Cotton, who died in 1631, was already in public hands and had been kept at Ashburnham House, Westminster. Two royal libraries later joined these: the Old Royal Library, given by George II, and the King's Library of George III. For years the collections sat scattered across central London, in Bloomsbury, Chancery Lane, Bayswater, and Holborn, with the newspaper library out at Colindale.

• 3. The Building At St Pancras

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  Initial plans demanded the demolition of a seven-acre swathe of streets in Bloomsbury, directly in front of the British Museum, so the new library could sit opposite it. A long and hard-fought campaign led by Dr George Wagner overturned that plan. Instead the library was built by John Laing plc on a site at Euston Road, next to St Pancras railway station. The architect Colin St John Wilson designed it for the purpose, working with his wife MJ Long, who devised the plan that was developed and built. Facing Euston Road is a large piazza with public art, including large sculptures by Eduardo Paolozzi, whose bronze is based on William Blake's study of Isaac Newton, and by Antony Gormley. It was the largest public building put up in the United Kingdom in the 20th century. Elizabeth II officially opened it on the 25th of June 1998. At the heart of the building stands a six-storey glass tower, inspired by a similar structure in the Beinecke Library, holding the King's Library: 65,000 printed volumes plus pamphlets, manuscripts and maps that King George III gathered between 1763 and 1820. The Euston Road building was Grade I listed on the 1st of August 2015, classified as of exceptional interest for its architecture and history. The British Library has plans for a third location in Leeds, potentially in the Grade I listed Temple Works.

• 4. A Vault In Yorkshire

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  Around 70% of the total material the library holds now sits in Yorkshire, near Boston Spa. The site has a long industrial past: before it housed the National Lending Library for Science and Technology, it held a World War II Royal Ordnance Factory, ROF Thorp Arch, which closed in 1957. The lending body that moved there had been established in 1961, and when it joined the British Library in 1973 it became the British Library Lending Division. It was renamed the British Library Document Supply Centre in 1985, and is now the British Library Document Supply Service. Boston Spa became the destination for low-use material. From January 2009 to April 2012, over 200 km of material was moved to the Additional Storage Building, with items now delivered to London reading rooms on request by a daily shuttle. Construction on that building finished in 2013. A separate storage building at Boston Spa was opened by Rosie Winterton in December 2009. Costing 26 million pounds, it can hold seven million items in more than 140,000 bar-coded containers, retrieved by robots from 162.7 miles of temperature and humidity-controlled space. The Document Supply Service holds 87.5 million items, among them 296,000 international journal titles, 400,000 conference proceedings, 3 million monographs, and 500,000 UK and North American theses and dissertations.

• 5. The Legal Deposit Right

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  Legal deposit in England can be traced back to at least 1610, and it is the principle that keeps the collection growing on its own. The Copyright Act 1911 set the rule that the British Library and five other libraries in Great Britain and Ireland may receive a free copy of every item published or distributed in Britain. The other five are the Bodleian Library at Oxford, the University Library at Cambridge, Trinity College Library in Dublin, and the National Libraries of Scotland and Wales. Only the British Library must automatically receive a copy of every item published in Britain. The others are entitled to items but must request them from the publisher, a task handled centrally by the Agency for the Legal Deposit Libraries. Under Irish copyright law, most recently the Copyright and Related Rights Act 2000, the British Library automatically receives a free copy of every book published in Ireland, alongside the National Library of Ireland and several Irish university libraries. The Legal Deposit Libraries Act 2003 extended UK requirements to electronic documents such as CD-ROMs and selected websites. The British Library receives copies of all books produced in the United Kingdom and Ireland, plus a significant share of overseas titles distributed in the UK.

• 6. Newspapers And Manuscripts

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  The Library holds an almost complete collection of British and Irish newspapers since 1840, partly because of legal deposit legislation of 1869 that required newspapers to supply each edition. London editions of national daily and Sunday papers run back to 1801. In total the newspaper collection holds 660,000 bound volumes and 370,000 reels of microfilm, with 52,000 titles across 45 km of shelves. Older holdings include the Thomason Tracts, 7,200 seventeenth-century newspapers, and the Burney Collection, nearly a million pages from the late 18th and early 19th centuries. The newspaper section was based at Colindale in North London until 2013, when the buildings, judged to give inadequate storage and beyond improvement, were closed and sold. Colindale shut on the 8th of November 2013. The manuscript holdings rest on the three foundation collections brought together for the British Museum in 1753: the Cotton, Harley and Sloane manuscripts. Other named collections include the Arundel, Egerton, King's, Lansdowne, Royal and Stowe manuscripts, the Stefan Zweig Collection and the Yates Thompson manuscripts. The Additional Manuscripts series covers everything donated, purchased or bequeathed since 1756. Its numbering begins at 4101, because it was first seen as a continuation of the Sloane manuscripts, which are numbered 1 to 4100. On display in the Sir John Ritblat Gallery, open seven days a week at no charge, are treasures such as Beowulf, the Lindisfarne Gospels and St Cuthbert Gospel, a Gutenberg Bible, and a room devoted solely to Magna Carta.

• 7. Preserving The Digital Memory

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  In 2005 the British Library began the UK Web Archive project, collecting and preserving UK websites, and at first contacting each website owner for permission to archive. In 2012 the UK legal deposit libraries signed a memorandum of understanding that allowed automatic collection of all websites and a shared technical infrastructure, the Digital Library System developed by the British Library. On the 5th of April 2013 the Library announced a project to archive every site with the .uk suffix, in a bid to preserve the nation's digital memory, then about 4.8 million sites containing a billion web pages. After the Legal Deposit Libraries (Non-Print Works) Regulations 2013, non-print electronic publications were brought in from the 6th of April 2013. Four storage nodes, in London, Boston Spa, Aberystwyth and Edinburgh, are linked by a secure network, constantly communicating to replicate, self-check and repair data. A complete crawl of every .uk domain has been added annually since 2013, and the system also holds the Internet Archive's 1996-2013 .uk collection. The model is based on the Bibliothèque nationale de France, which has crawled the .fr domain annually since 2006. Among the images the Library makes available online are 30,000 from medieval books, and the facility to turn the virtual pages of documents such as Leonardo da Vinci's notebooks. As of 2022, Explore the British Library, the latest online catalogue, contains nearly 57 million records.

• 8. When The Catalogue Went Dark

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  On the 28th of October 2023 the British Library's entire website went down due to a cyber attack, later confirmed as a ransomware attack attributed to the group Rhysida. Catalogues and ordering systems were hit, putting the great majority of the collections out of reach of readers. The library warned that services would be disrupted for several weeks, with some disruption lasting several months. As of January 2024 it was still experiencing technology outages from the attack. By October 2024 many services had been restored, including remote item ordering, online learning and online manuscripts, and a new library management system launched in late 2025. PhD theses remain unavailable through the E-Theses Online Service since the attack, with work to restore that collection set to begin later in 2026. The institution is also looking outward and forward. In March 2025 the British Library announced a 1.1 billion pound expansion in partnership with Mitsui Fudosan, adding 100,000 square feet for cultural, learning, research and business activities, funded by 600,000 square feet of new commercial and retail space. The same library that holds Magna Carta and crawls a billion web pages is now betting its next chapter on the ground beside St Pancras.