British Library, national library of Great Britain, located in London. Long a part of the British Museum British Museum, the national repository in London for treasures in science and art. Located in the Bloomsbury section of the city, it has departments of antiquities, prints and drawings, coins and medals, and ethnography.
..... Click the link for more information. , the library collection originated in 1753 when the government purchased the Harleian Library Harleian Library (här`lēən, härlē`–)
..... Click the link for more information. , the library of Sir Robert Bruce Cotton Cotton, Sir Robert Bruce, 1571–1631, English antiquarian. The Cottonian collection of books, manuscripts, coins, and antiquities became a part of the British Museum when it was founded in 1753.
..... Click the link for more information. , and groups of manuscripts. The collection grew four years later when George II donated his royal library, and was considerably enlarged with the addition of George III's library in 1823. It flourished in the 19th cent. under the leadership of Sir Anthony Panizzi Panizzi, Sir Anthony (pänēt`sē), 1797–1879, British librarian, b. Italy.
..... Click the link for more information. . The library remained a part of the museum until 1973 when it was made a separate entity by act of Parliament. The museum complex was famous for its large, copper-domed Round Reading Room, for 140 years (1857–1997) the haunt of an array of scholars, authors, and other luminaries. In 1997 the library was moved to vast new quarters at London's King's Cross. Designed by British architect Colin St. John Wilson, the new library is spacious and multileveled, with four large reading rooms and several exhibition areas. Traditionally a nonlending reference library with manuscript and printed books divisions, the library now has large lending and bibliographic departments and is the copyright depository library for the United Kingdom. Outstanding works in its collection include a unique papyrus of Aristotle, four original Magna Cartas, Beowulf, the 4th-century Greek Codex Sinaiticus Bible, a Gutenberg Bible, Froissart's Chronicles, and the Diamond Sutra (868), probably the oldest surviving printed book.

British Library

National library of Great Britain, formed by the British Library Act (1972) and organized July 1, 1973. It consists of the former British Museum library, the National Central Library, the National Lending Library for Science and Technology, and the British National Bibliography. The British Museum library, founded in 1753 based on earlier collections and later increased by the addition of royal libraries, had the right to a free copy of all books published in the United Kingdom. Its collection included a rich series of charters (including those of the Anglo-Saxon kings), codices, psalters, and other papers ranging from the 3rd century BC to modern times. The present-day British Library receives a copy of every publication produced in the United Kingdom and Ireland.