 At the age of 19 he moved to England, to try out for drama school and attended Birmingham School of Speech and Drama from which he graduated in 1998.He is possibly best known for one of his early roles, that of PS in "Careful, He Might Hear You" (1983), the story of a young boy in the middle of a custody battle between his two aunts and based on the novel by Sumner Locke Elliott.Gledhill was nominated for a Best Actor award by the Australian Film Institute for this role in 1984.