The British Library is the national library with its main collections and Reading Rooms near Euston Station in London: see the "Join" pages for information about membership.
The National Library of Scotland in Edinburgh is Scotland's largest library and the world centre for the study of Scotland and the Scots.
The National Library of Wales in Aberystwyth holds over over 6.5 million books and periodicals, and the largest collections of archives, portraits, maps and photographic images in Wales.