This is the only episode in the entire series not to feature the nextdoor neighbour Elizabeth, and the only episode not to feature her brother Emmet, since his arrival at the beginning of Season 2.
Hyacinth: [While Richard is driving] I think you should have turned left.
Richard: I did turn left.
Hyacinth: I distinctly told you to turn left.
Richard: That's why I turned left. I'm no fool. It's easier to be lost than disobedient.
On the DVDs, this episode is titled "Golfing with the Major."