Biography: Alistair Lock is an actor, composer and sound designer best known for his work on the Big Finish series of classic Doctor Who and Blake’s 7 audiobooks and dramas and most notably for B7 Media’s reimagined Blake’s 7: A Rebellion Reborn and Dan Dare audio adventures. Prior to this, he has worked on a number of independent Doctor Who stories produced during the television series’ hiatus. Credits include BBV’s Doctor Who spin-off audio plays, notably Republica and Prosperity Island, along with direct-to-video releases, including The Airzone Solution, More than a Messiah and the Auton trilogy series. He also did post-production special sound on the popular UNIT video story Downtime.