Mark Estdale is a British voice director, sound engineer, voice actor, and casting director. In the 1980s, he worked as a sound engineer for musicians such as The Box, UV PØP, and industrial band In The Nursery. He co-founded the electronic band Chains with Peter Hope, which in 1986 released a single on Native Records. In the 1990s, Estdale began working on video games, and is well known in the industry for founding the voice production company Outsource Media in 1996. As casting and voice director he has worked on over five hundred video games since 1995, including titles such as TimeSplitters 2, J K Rowling's Book of Spells, Clive Barker's Jericho and Wallace & Gromit's Grand Adventures.