Bad Tidings - S7-E2
Continuity mistake: When Helen Grace is in the retired GP's house choosing which apple she will eventually stuff in to her victim's mouth, her hand wavers over one apple, but instead chooses another. At the end when we see a flashback of that scene, she picks up the first apple she was originally going for.
Answer: Yes, he appeared in an episode called "Judgement Day", shown in 2000.
Tailkinker ★