 Beginning his career in the British film industry as camera assistant to Gabriel Beristain, Mathieson worked his way through the ranks.In 1988 he garnered recognition for the ground breaking video "Peek-a-Boo" for Siouxsie and the Banshees, directed by Peter Scammell.He collaborated with John Maybury, director of the Sinéad O'Connor video "Nothing Compares 2 U", going on to photograph Maybury's award-winning film "".