I just found out an interesting detail about this episode. Everyone probably noticed that, at the very beginning of the episode, the Doctor is reading an issue of The Beano
dated 1981 (no doubt to indicate the era for the viewer).
However, a more subtle indication of the era is the song that is playing from the very beginning to when Ellie rescues her husband-to-be from getting hit by a car. It is Ghost Town
, by the UK ska band The Specials
, which was also released in 1981 (and was apparently a hit song). So there is both a visual and auditory clue as to the time period.
I imagine older British viewers appreciated this reference more than younger viewers or foreign viewers (like me).