[Stuart]

Actually, the main point of my question was whether or not the episodes were shown later in the evening on account of the nature of the story arc.

Perhaps C4 were still in their risqué period, or was this acceptable content for 8pm in 1985?

My comment about the darker background for the end credit sequence was perhaps misleading, as I usually just click green for the next episode as soon as I hear the music at the end, so don't watch it.