Suggestions by @optimistic_writer

Katarina Olsson

as Orthena in What If Doctor Who Wasn't Axed? - Panopticon (2010)

John Leeson

as K-9 in What If Doctor Who Wasn't Axed? - Panopticon (2010)

Paul Bentley

as Professor Chronotis in What If Doctor Who Wasn't Axed? - Panopticon (2010)

Dougray Scott

as Chris Parsons in What If Doctor Who Wasn't Axed? - Panopticon (2010)

Juliet Landau

as Zenla in What If Doctor Who Wasn't Axed? - Panopticon (2010)

Karen Gillan

as Kendara in What If Doctor Who Wasn't Axed? - Panopticon (2010)

Clare Higgins

as Ohila in What If Doctor Who Wasn't Axed? - Panopticon (2010)

Christopher Biggins

as Francis in What If Doctor Who Wasn't Axed? - Panopticon (2010)

Emma Caulfield

as Cordale in What If Doctor Who Wasn't Axed? - Panopticon (2010)

Louise Jameson

as Leela in What If Doctor Who Wasn't Axed? - Panopticon (2010)

David Tennant

as Will Adams in What If Doctor Who Wasn't Axed? - Panopticon (2010)

Paterson Joseph

as The Doctor in What If Doctor Who Wasn't Axed? - Panopticon (2010)

Siobhan Redmond

as The Rani in What If Doctor Who Wasn't Axed? - Panopticon (2010)

Peter Capaldi

as Gregori in What If Doctor Who Wasn't Axed? - Panopticon (2010)

Timothy Dalton

as The Rogue in What If Doctor Who Wasn't Axed? - Panopticon (2010)

Jason Segel

as Viffiko in What If Doctor Who Wasn't Axed? - Panopticon (2009)

Keith David

as Baltrom in What If Doctor Who Wasn't Axed? - Panopticon (2009)

Michael Ironside

as Niromor in What If Doctor Who Wasn't Axed? - Panopticon (2009)

Alexander Siddig

as Ensign Fassile in What If Doctor Who Wasn't Axed? - Panopticon (2009)

Gai Waterhouse

as Presta in What If Doctor Who Wasn't Axed? - Panopticon (2009)