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Production No. 55 • BBC Broadcast Date: 02 Jan 71 Doctor: Jon Pertwee • No. of Eps: 4 • Total No. of Eps: 282 Companions: Jo Grant, UNIT Villains: Master, Nestene, Autons Producer: Barry Letts Director: Barry Letts Writer: Robert Holmes Designer: Ian Watson . .
Production No. 56 • BBC Broadcast Date: 30 Jan 71 Doctor: Jon Pertwee • No. of Eps: 6 • Total No. of Eps: 288 Companions: Jo Grant, UNIT Villains: Master, Parasite Producer: Barry Letts Director: Timothy Combe Writer: Don Houghton Designer: Raymond London . .
Production No. 57 • BBC Broadcast Date: 13 Mar 71 Doctor: Jon Pertwee • No. of Eps: 4 • Total No. of Eps: 292 Companions: Jo Grant, UNIT Villains: Master, Axos Producer: Barry Letts Director: Michael Ferguson Writer: Bob Baker, Dave Martin Designer: Kenneth Sharp . .
Production No. 58 • BBC Broadcast Date: 10 Apr 71 Doctor: Jon Pertwee • No. of Eps: 6 • Total No. of Eps: 298 Companions: Jo Grant, UNIT Villains: Master, IMC Producer: Barry Letts Director: Michael Briant Writer: Malcolm Hulke Designer: Tim Gleeson . .
Production No. 59 • BBC Broadcast Date: 22 May 71 Doctor: Jon Pertwee • No. of Eps: 5 • Total No. of Eps: 303 Companions: Jo Grant, UNIT Villains: Master, Azal Producer: Barry Letts Director: Christopher Barry Writer: Guy Leopold Designer: Roger Ford .
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