Britain's art nouveau heritage is excavated as cultural correspondent Stephen Smith unearths the bright, controversial but brief career of Aubrey Beardsley. On a mission to uncover lesser-known stars of Britain's version of this continental fin-de-siecle style, he explores the stunning work of Mary Watts and the massive influence of department store entrepreneur Arthur Liberty.In Scotland, he celebrates the innovative art nouveau of Charles Rennie Mackintosh, but looks harder at the extraordinary and influential work of Mackintosh's wife, Margaret MacDonald.