Trivia

During filming, Sylvester McCoy stood in the middle of Albert Square and yelled, "I don't understand why those BBC Enterprises people can't get us all together for love nor money, but when JNT makes a few calls, we're all here with our boots blacked - doing it for nothing! There must be something wrong!"

Produced for a charity TV special to celebrate the 30th anniversary of Doctor Who (1963). Licensing and copyright restrictions prevent this production from being rebroadcast.

This was Tom Baker's first (albeit very brief) return to playing The Doctor since leaving the series in Logopolis: Part Four (1981). In 2013, he played a character who may or may not be The Doctor in The Day of the Doctor (2013). In 2017 he voiced the animated segments and appeared in a brief scene in the recreated story Doctor Who: Shada (2017).

This was Jon Pertwee's final appearance as the Third Doctor. However, Pertwee would later provide the voice of the Third Doctor for the audio productions of "The Paradise of Death" and "The Ghosts of N-Space" and appeared as Doctor Jeremiah Kane in the spin-off video released film The Zero Imperative (1994) written by Mark Gatiss. Pertwee died in May 1996.

Kate O'Mara's final appearance as The Rani. However, O'Mara would reprise the role for the 2000 "Audio Adventures in Time and Space" production "The Rani reaps the Whirl Wind". Kate passed away on 30 March, 2014.