NPL - National Physical Laboratory: UK's national standards laboratory, founded in 1900 to promote links between science and commerce. Offers world-class metrology facilities for calibration services. Research programmes, measurement solutions, news, events, history, publications, press centre, careers, clubs, learning room

Royal Botanic Gardens, Kew: A World Heritage Site. Overview of the gardens, collections, conservation and research activities of the Gardens. Information on tours, trails and the education programme which includes fellowships and diploma

The National Archives: Formed in April 2003 at Kew by the merger of the Public Record Office and the Historic Manuscripts Commission. Offers advice on searching collections and museum online or by personal visit. Exhibitions, events, news, shop, document ordering