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

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

July

 * 1 July - Studio filming for Planet of Evil took place at BBC Television Centre studio 6. (REF: Doctor Who The Handbook: The Fourth Doctor)
 * 14-15 July - Studio filming for Planet of Evil took place at BBC Television Centre studio 3. (REF: Doctor Who The Handbook: The Fourth Doctor)
 * 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)

October

 * 14 October - The Hand of Fear was pulled from its season 13 closing spot, and put on hold. The Seeds of Doom replaced it. Hand was eventually fit into the season 14 schedule, with both major and minor plot changes.
 * 27-31 October - Location filming for The Seeds of Doom took place. (REF: Doctor Who The Handbook: The Fourth Doctor)

November

 * 17-18 November - Studio filming for The Seeds of Doom took place at BBC Television Centre studio 4. (REF: Doctor Who The Handbook: The Fourth Doctor)

December

 * 1-2 December - Studio filming for The Seeds of Doom took place at BBC Television Centre studio 4. (REF: Doctor Who The Handbook: The Fourth Doctor)
 * 15-16 December - Studio filming for The Seeds of Doom took place at BBC Television Centre studio 8. (REF: Doctor Who The Handbook: The Fourth Doctor)