Museums, Libraries and Archives Council (MLA) - The national (UK) development agency working for and on behalf of museums, libraries and archives and advising government on policy and priorities for the sector. - http://www.mla.gov.uk/
The National Library of Scotland - Originally established in 1682 to serve scholars, researchers and large users of information. Now responsible to the Scottish Executive. - http://www.nls.uk/
The National Library of Wales - Created in 1907 to serve scholars, researchers and large users of information. Now responsible to the National Assembly of Wales. - http://www.llgc.org.uk/
The British Library - Formed in 1973 to serve scholars, researchers and large users of information. Based in London and Boston Spa. - http://www.bl.uk/