For many years Snow was one of Australia's top male commercial actors. He starred in numerous television commercials in Australia, Europe and the USA. His acting career took off when he landed the lead role as "David Grief" in the International Television Series "Tales of the South Seas", based on novels by Jack London. He then stared in the US Independent feature "Dead End" after which he appeared as "Lord John Roxton" in the three year running US series "The Lost World" for producer "John Landis". William is now perusing his acting career in the US, where he has completed work on the NBC miniseries "Hercules", as well as Warner Bros "The Closer", "Charmed" and a lead role in the independent feature "Brotherhood of Blood".