Born in England, Campion studied technical illustration at Bournemouth and Poole College of Art and Design.
In 1999 he completed a Master's degree in Computer Animation at Bournemouth University,[1] and then moved to New Zealand where he worked on Peter Jackson's The Lord of the Rings film trilogy, as a texture painter, creating digital textures for the Balrog, Mûmakil, Fellbeast, and Shelob.
In 2008 he followed this up with the short science fiction horror film Eel Girl, featuring special makeup effects by Weta Workshop.
In 2010 he wrote and directed his first feature film The Devil's Rock, co-written with Paul Finch and Brett Ihaka.
Set in the Channel Islands during WW2, it tells the story of two New Zealand commandos who uncover a Nazi plot to summon up a demon, using a book of black magic.