- Writer:
- Eric Saward
- Script Editor:
- Eric Saward
- Designer:
- John Anderson
- Producer:
- John Nathan-Turner
- Director:
- Matthew Robinson
- The Doctor:
- Peter Davison
- Stien:
- Rodney Bewes
- Lytton:
- Maurice Colbourne
- Mercer:
- Jim Findley
- Styles:
- Rula Lenska
- Turlough:
- Mark Strickson
- Crew member:
- Linsey Turner
- Professor Laird:
- Chloe Ashcroft
- Tegan:
- Janet Fielding
- Colonel Archer:
- Del Henny
- Sergeant Calder:
- Philip McGough
- Davros:
- Terry Molloy
- Kiston:
- Les Grantham
- Trooper:
- Roger Davenport
- Dalek voices:
- Brian Miller
- Dalek voices:
- Royce Mills
- Dalek operator:
- John Scott Martin
- Dalek operator:
- Cy Town
- Dalek operator:
- Tony Starr
- Dalek operator:
- Toby Byrne