I remember the fist episode where Kitty alights from a W class tram on her way home from school. It was set in 1939 but shot in 1976, I wondered if the producers did anything special to choose the tram that Kitty rode on or just boarded the regular service W class which were still running at the time?
Probably the former because they would have done retakes and made the tram go back and forth.
Probably the former because they would have done retakes and made the tram go back and forth.