Brief male butt nudity

Two of the main characters, not married to each other, have a sex scene with thrusting/moaning and rear male nudity.

Only male nudity as usual

Towards the end of series 1 a man fully naked for some unmentioned reason walks and crosses the boarder.

Full rear male nudity whilst thrusting during sex scene, female is wearing underwear

The f-word is used throughout the series, repeatedly, by two of the main characters. Episode 4 usage of God's name in vain ("God willing or not.")