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Tom Baker as The Doctor |
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Elisabeth Sladen as Sarah Jane Smith |
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Tony Beckley as Harrison Chase |
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Kenneth Gilbert as Richard Dunbar |
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Michael Barrington as Sir Colin Thackeray |
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Sylvia Coleridge as Amelia Ducat |
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John Challis as Scorby |
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Mark Jones as Arnold Keeler / Krynoid (voice) |
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Seymour Green as Hargreaves |
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Michael McStay as Derek Moberley |
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Hubert Rees as John Stevensen |
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John Gleeson as Charles Winlett |
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Ian Fairbairn as Doctor Chester |
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John Acheson as Major Beresford |
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Ray Barron as Sergeant Henderson |
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Alan Chuntz as Chauffeur |
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David Masterman as Guard Leader |
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Harry Fielder as Guard |
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Pat Gorman as Guard |
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Ian Elliott as Guard |
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Keith Ashley as Sir Colin's Aide |
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Ronald Gough as Marine |
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Patrick Milner as Marine |
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Barry Summerford as UNIT Soldier |
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Tony Snell as UNIT Soldier |
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Patrick Ginter as UNIT Soldier |
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Rowland Geall as UNIT Soldier |
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Derek Wayland as UNIT Soldier |
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Keith Ashley as The Krynoid |
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Ronald Gough as The Krynoid |
| Writing | Robert Holmes | Script Editor |
| Directing | Douglas Camfield | Director |
| Writing | Robert Banks Stewart | Writer |
| Production | Philip Hinchcliffe | Producer |
| Editing | M.A.C. Adams | Editor |
| Sound | Geoffrey Burgon | Original Music Composer |
| Art | Jeremy Bear | Production Design |
| Costume & Make-Up | Ann Briggs | Makeup Artist |
| Visual Effects | Richard Conway | Visual Effects |
| Lighting | John Dixon | Lighting Director |
| Production | George Gallaccio | Production Manager |
| Production | Graeme Harper | Production Assistant |
| Sound | John Holmes | Sound |
| Lighting | Clive Potter | Lighting Technician |
| Sound | Vic Godrich | Sound |
| Camera | Keith Hopper | Camera Operator |
| Costume & Make-Up | Barbara Lane | Costume Design |
| Crew | Dick Mills | Special Sound Effects |
| Art | Roger Murray-Leach | Production Design |
| Crew | Terry Walsh | Fight Choreographer |
| Sound | Delia Derbyshire | Theme Song Performance |
