William Purdom was a British plant explorer. After being apprenticed as a gardener at Brathay Hall in the English Lake district, he traveled to London to work at the Hugh Low, Enfield Nursery, then onto the Veitch establishment at Coombe Wood. In 1902, Purdom took up a position as a gardener at Kew Botanic Garden soon becoming promoted to a sub-foreman (leading-hand) position. Purdom became heavily involved with early Union activities particularly promoting the rights of junior workers which eventually led to his unjustified dismissal. Despite being a bane to the, then, Kew Director, David Prain, the latter recognized the talents of William Purdom and recommended his employee as being very suitable as a plant collector for a joint venture by Veitch and the Arnold Arboretum of Harvard University to the northern provinces of China in 1909.