. Caroline John - Liz Shaw . Nicholas Courtney - Brig. Lethbridge-Stewart . Prentis Hancock - 2nd Reporter . Robin Squire (Ivan Orton) - Auton and Double for Channing . Ellis Jones - Technician and Voice of Doctor Lomax . Derrick Sherwin - Producer, UNIT Commissionaire and Double for Hibbert (Ep.4)
. Terrance Denville - UNIT Soldier in Caves and UNIT Soldier and Wenley Moore . Terrance Dicks - Script Editor . Peter Miles - Dr. Lawrence . Nicholas Courtney - Brig. Lethbridge-Stewart . Cy Town - Technician . Bella Emberg - Hospital Nurse . Paul Darrow - Captain Hawkins . Caroline John - Liz Shaw
. Cy Town - Technician . Caroline John - Liz Shaw . Peter Miles - Dr. Lawrence . Bella Emberg - Hospital Nurse . Peter Roy - Londoner . Nicholas Courtney - Brig. Lethbridge-Stewart . Timothy Combe - Director . Terrance Dicks - Script Editor . Paul Darrow - Captain Hawkins
. Caroline John - Liz Shaw . Juan Moreno (John Moreno) - Dobson . Geoffrey Beevers - Private Johnson . Nicholas Courtney - Brig. Lethbridge-Stewart . John Levene - Sergeant Benton Roy Scammell - Technician, Motorcyclist Stuntman/Dbl for Liz Shaw, Unit Soldier and Peterson
. Derek Martin - Reegan's Heavies . Juan Moreno (John Moreno) - Dobson . John Levene - Sergeant Benton Roy Scammell - Technician, Motorcyclist Stuntman/Dbl for Liz Shaw, Unit Soldier and Peterson
. David Simeon - Private Latimer . Barry Letts - Producer, Director (3, 4, 5, 6, 7), Shutdown Voices and two others . Caroline John - Liz Shaw and Section Leader Elizabeth Shaw . Nicholas Courtney - Brig. Lethbridge-Stewart and Brigade Leader . Christopher Benjamin - Sir Keith Gold . Ian Fairbairn - Bromley and Loudspeaker Voice . John Levene - Sergeant Benton and Platoon Under Leader Benton
AUTOGRAPHED BY . Stuart Fell - Alpha Centauri . Sonny Caldinez - Ssorg (Ice Warrior) . David Troughton - King Peladon . Katy Manning - Jo Grant . Wendy Danvers - Amazonia . Nick Hobbs - Aggedor