1975 (production)

January

 * January - Location and Ealing filming for Genesis of the Daleks took place. (REF: Doctor Who The Handbook: The Fourth Doctor)
 * 16 January - The BBC's Audience Research Dept. filed an Audience Research Report on Robot Episode 1. The episode received a Reaction Index of 53. Reaction to new Doctor Tom Baker was mixed, with some respondents saying he would take some getting used to.
 * 27-28 January - Studio filming for Genesis of the Daleks took place at BBC Television Centre studio 1. (REF: Doctor Who The Handbook: The Fourth Doctor)

February

 * 10-11 February - Studio filming for Genesis of the Daleks took place at BBC Television Centre studio 8. (REF: Doctor Who The Handbook: The Fourth Doctor)
 * 24-25 February - Studio filming for Genesis of the Daleks took place at BBC Television Centre studio 6. (REF: Doctor Who The Handbook: The Fourth Doctor)

April

 * 29-30 April - Location filming for Pyramids of Mars took place. (REF: Doctor Who The Handbook: The Fourth Doctor)

May

 * 1-2 May - Location filming for Pyramids of Mars took place. (REF: Doctor Who The Handbook: The Fourth Doctor)
 * 19-20 May - Studio filming for Pyramids of Mars took place at BBC Television Centre 3. (REF: Doctor Who The Handbook: The Fourth Doctor)

June

 * 2-3 June - Studio filming for Pyramids of Mars took place at BBC Television Centre 6. (REF: Doctor Who The Handbook: The Fourth Doctor)

July

 * 22-25 July - Location filming for The Android Invasion took place. (REF: Doctor Who The Handbook: The Fourth Doctor)

August

 * 11-12 August - Studio filming for The Android Invasion took place at BBC Television Centre studio 3. (REF: Doctor Who The Handbook: The Fourth Doctor)
 * 25-26 August - Studio filming for The Android Invasion took place at BBC Television Centre studio 8. (REF: Doctor Who The Handbook: The Fourth Doctor)