Doctor Who: The Seeds of Doom

Tony Beckley as Harrison Chase John Challis as Scorby Alan Chuntz as Chauffeur Pat Gorman as Guard Tom Baker as The Doctor Elisabeth Sladen as Sarah Jane Smith Mark Jones as Arnold Keeler / Krynoid (voice)

Philip Hinchcliffe Producer George Gallaccio Production Manager Terry Walsh Fight Choreographer Delia Derbyshire Theme Song Performance Dick Mills Special Sound Effects Graeme Harper Production Assistant Robert Holmes Script Editor Douglas Camfield Director Robert Banks Stewart Writer Geoffrey Burgon Original Music Composer Roger Murray-Leach Production Design