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Philip Madoc is a Welsh film and TV actor, who's played everyone from Prime Minister David Lloyd George to an SS Officer. He appeared in the second Peter Cushing Doctor Who spinoff movie, later appeared in four stories of the classic TV show, as Eelek in "The Krotons", as the War Lord in "The War Games", as Mehendri Solon in "The Brain of Morbius", and as Fenner in "The Power of Kroll", and has been featured in some commentaries and interviews on DVD releases.

Melanie Walters is a British TV actress, best known as Gwen in the romantic-comedy series Gavin & Stacey. She has not appeared in Doctor Who or its spin-offs.