The mission of the Wellcome Trust is 'to promote and foster research with t
he aim of improving human and animal health'. In this paper the Director of
the Wellcome Trust describes the organisation's history, its current posit
ion in the UK and international arenas, and the strategies the Trust will p
ursue in meeting its mission. This includes an explanation of the role of t
he Trust in enhancing the UK science base by focusing on support of knowled
ge creation, scientific careers, infrastructure and the translation of rese
arch from the laboratory to the clinic, and in promoting the public's appre
ciation of and confidence in science.