Throughout the episode they make mention of "that show where they show your life starting in short pants and ending shaking hands with Danny LaRue " and each person saying "I saw that I didn't like it" . This is a joke in reference to John Inman (who plays Mr. Humphries) recently being the star of an episode and his cast mates making an appearance.
Mrs. Slocombe admits making 3 pounds commission on 60 pounds of goods. The rate of commission at Grace Bros. is 5%.