Once and Future

 was a series of audio stories released by Big Finish Productions to celebrate the 60th anniversary of Doctor Who.

One audio story was released each month between May and October 2023, with a coda being released November 2024.

Publisher's summary
The Time War. The Doctor has been injured and brought to a Time Lord field hospital. His body glows with energy, but this is no regeneration into a future form - instead, the Doctor's past faces begin to appear as he flits haphazardly between incarnations...

Staggering to his TARDIS, the Doctor sets out to solve the mystery of his 'degeneration'. Who has done this to him? How? And why? From the Earth to the stars, across an array of familiar times and places, he follows clues to retrace his steps, encountering old friends and enemies along the way. Tumbling through his lives, the Doctor must stop his degeneration before he loses himself completely...

Featured Cast

 * Tom Baker
 * Peter Davison
 * Colin Baker
 * Sylvester McCoy
 * Paul McGann
 * Christopher Eccleston
 * David Tennant

Featuring

 * Stephen Noonan
 * Michael Troughton
 * Tim Treloar
 * David Warner
 * Michelle Gomez
 * Nicola Walker
 * Georgia Tennant
 * Michelle Ryan
 * Camille Coduri
 * Neve McIntosh
 * Catrin Stewart
 * Dan Starkey
 * Sadie Miller
 * Christopher Naylor
 * Ken Bones
 * Beth Chalmers
 * Rufus Hound
 * Jemma Redgrave
 * Ingrid Oliver