Guest Stars Betty Bowden as Meg Hugh Burden as Channing Talfryn Thomas as Mullins Henry McCarthy as Dr. Beavis Prentis Hancock as 2nd Reporter John Breslin as Captain Munro Alan Mitchell as Wagstaffe Tessa Shaw as UNIT Officer Ellis Jones as Technician Clifford Cox as Sergeant Hamilton Dyce as Major General Scobie Antony Webb as Dr. Henderson George Lee as Corporal Forbes Edmund Bailey as Attendant Helen Dorward as Nurse Neil Wilson as Seeley John Woodnutt as Hibbert Derek Smee as Ransome Constance Carling as Auto Plastics Secretary
