The British Library, commonly abbreviated as BL, is the largest collection of printed and handwritten material, containing "well over 150 million items" (BL website, 2018), in the United Kingdom. It is housed in two main sites: the principal collections of books and manuscripts (and exhibitions) is the British Library at St Pancras, 96 Euston Rd, London NW1 2DB; there is also a site, officially British Library Document Supply Centre mostly used for interlibrary lending at Boston Spa, Wetherby LS23 7BQ. The British Library Newspapers collection is also housed in Boston Spa (British Library Document Supply Centre, []: it was previously at Colindale in London.
The British Library was set up by an 1972 Act of Parliament in 1973. The St Pancras building, on the site of a disused railway goods yard, was formally opened in 1998. It was the successor of di9stinguished predecessors, and the amalgamnation of other libraries.