20 August (production)


 * 1963 - Filming for Doctor Who began. In the initial session, the title sequence was created by Bernard Lodge. He pointed a camera at the camera's monitor screen, which created the pattern of feedback, or what is known as "the howl-around effect". Lodge later recalled that his work on this day was inspired by the work of Ben Palmer, who had done something similar on.
 * 2007 - Recording for Sisters of the Flame took place at The Moat Studios.
 * 2009 - Recording for Deimos and The Resurrection of Mars took place at The Moat Studios.
 * 2014 - Recording for The Well-Mannered War took place at Audio Sorcery.
 * 2015 - Recording for Uncanny Valley took place at Ladbroke Audio.
 * 2018 - Recording for The Eighth Doctor: The Further Adventures of Lucie Miller: Volume One took place at the Moat Studios.
 * 2018 - Big Finish announced a special audio box set, The Legacy of Time, to commemorate the twentieth anniversary of Big Finish's Doctor Who audio adventures.
 * 2019 - Recording for Blood on Santa's Claw and Other Stories took place at The Soundhouse.
 * 2019 - Big Finish announced the audio box set The Sixth Doctor and Peri: Volume One.