He attended the Royal Academy of Dramatic Art (RADA).
Blackwood played Balazar in the first four episodes of the 1986 Doctor Who serial The Trial of a Time Lord.
He has provided the voice of James Bond in four video games: The World Is Not Enough (Nintendo 64 and PlayStation), 007 Racing, Tomorrow Never Dies, and 007: Agent Under Fire.
Blackwood retired from acting in 2002 and since then has run Private Drama Events, a company specialising in corporate storytelling [1] Blackwood has an older sister, Nicola, and a younger sister, Catriona.
In 1989, he married Nicola King in Haywards Heath, West Sussex.