1971 (production)

Unknown Dates

 * At some point during 1971, World Distributors cancelled plans for a 1972 Doctor Who Annual for unknown reasons. This was the only year the book was skipped until its cancellation in the mid-1980s.

January

 * 4-8 January - Location filming for The Claws of Axos took place. (REF: Doctor Who The Handbook: The Third Doctor)
 * 22-23 January - Studio filming for The Claws of Axos took place at BBC Television Centre 3. (REF: Doctor Who The Handbook: The Third Doctor)

February

 * 5-6 February - Studio filming for The Claws of Axos took place at BBC Television Centre 4. (REF: Doctor Who The Handbook: The Third Doctor)
 * 10-12 and 15-16 February - Location filming for Colony in Space took place. (REF: Doctor Who The Handbook: The Third Doctor)

March

 * 5-6 March - Studio filming for Colony in Space took place at BBC Television Centre 4. (REF: Doctor Who The Handbook: The Third Doctor)
 * 19-20 March - Studio filming for Colony in Space took place at BBC Television Centre 3. (REF: Doctor Who The Handbook: The Third Doctor)

April

 * 2-3 April - Studio filming for Colony in Space took place at BBC Television Centre 3. (REF: Doctor Who The Handbook: The Third Doctor)