Suggestions by @optimistic_writer

Thomas Sangster

as Quinton Smythe in What If Doctor Who Wasn't Axed? - Leftover (2003)

Pip Torrens

as Geoffrey Rocastle in What If Doctor Who Wasn't Axed? - Leftover (2003)

Emma Thompson

as Mrs. Alexander in What If Doctor Who Wasn't Axed? - Leftover (2003)

Robert Duncan McNeill

as Donald Harcourt in What If Doctor Who Wasn't Axed? - Leftover (2003)

Caroline John

as Liz Shaw in What If Doctor Who Wasn't Axed? - Leftover (2003)

Katy Manning

as Jo Jones in What If Doctor Who Wasn't Axed? - Leftover (2003)

Elisabeth Sladen

as Sarah Jane Smith in What If Doctor Who Wasn't Axed? - Leftover (2003)

Julia Sawalha

as Katie Tollinger in What If Doctor Who Wasn't Axed? - Leftover (2003)

Paul Cornell

as Producer in What If Doctor Who Wasn't Axed? - Leftover (2003)

John Banks

as Henrick in What If Doctor Who Wasn't Axed? - Leftover (2002)

Nicholas Briggs

as Slitheen in What If Doctor Who Wasn't Axed? - Leftover (2002)

Patrick Stewart

as Prime Minister in What If Doctor Who Wasn't Axed? - Leftover (2002)

Richard Griffiths

as The Doctor in What If Doctor Who Wasn't Axed? - Leftover (2002)

Nicholas Courtney

as Brigadier Alistair Gordon Lethbridge-Stewart in What If Doctor Who Wasn't Axed? - Leftover (2002)

Stewart Bevan

as Clifford Jones in What If Doctor Who Wasn't Axed? - Leftover (2002)

Laurie Holden

as Sammy Thompson in What If Doctor Who Wasn't Axed? - Leftover (2001)

Stewart Bevan

as Clifford Jones in What If Doctor Who Wasn't Axed? - Leftover (2001)

Richard E. Grant

as The Doctor in What If Doctor Who Wasn't Axed? - Leftover (2001)

Angela Bruce

as Brigadier Bambera in What If Doctor Who Wasn't Axed? - Leftover (2001)

Brian Cox

as The President in What If Doctor Who Wasn't Axed? - Leftover (2001)