Only really 1 sex scene throughout all 40 episodes. A Room is dark, but male buttocks seen. After they get up, explicit male genital nudity is seen.
Out of the 4 seasons, there are only a few episodes that have moderate sex/nudity. Most of the episodes have none-mild
Infrequent explicit male full frontal nudity.
S2, A man is completely nude, as he is walking to shower in a men's room. Only his butt can be seen for about 5 seconds.
A later episode in season 2 contains a sex scene with explicit male nudity. Other than this sex scene, no other episodes in the entire show are sexually explicit.
Other than the one scene in the later episode, not much sex or nudity.
Some episodes feature strong innuendo, implied intercourse. One episode in season two features a lengthy sex scene (without explicit nudity). Another episode features someone sexually dancing and posing for a camera. Occasional nudity includes male genitalia, buttocks. Storylines explore Princess Margaret's various romantic interests, and the extramarital affairs of other royals. Childbirth scenes with nothing private or bloody visible.
S5 contains themes of infidelity/affairs throughout, but the most sensitive scenes are limited to lewd sexual conversations. Other than that there's kissing and implied sex between a couple, plus exotic dancers on a wedding, and a woman's back when she bathes (no nudity)
A man sleeps in the nude, and his bare buttocks are seen for an extended period.
When an audience gathers in Kenya, bare-breasted women are shown.
A group of people witness horses mating.