Spiers made his acting debut in an episode of the 1986 children's drama seriesDodger, Bonzo and the Rest. Next, he appeared in an episode of Jim Henson's television seriesThe Storyteller in the episode titled "The Heartless Giant" in 1987. He also appeared in two films, Paperhouse and Taxandria which was his final acting role. Taxandria was filmed in 1989, but was not released until 1994 due to its lengthy post-production.