I thought bloody was still thought of as fairly cheeky in the 70s. You certainnly wouldn't hear it on Last of the Summer Wine.
Regarding the C-word though, it is strange how it is so shocking for itself, not for what it refers to. Words like fanny, tuppence, twinkle or lady garden don't raise an eyebrow. Honey and Berk both come from slang for lady bits too (Honeypot and Berkshire Hunt respectively) and they're both seen as quite affectionate terms these days.
(Actually - now I've seen this on screen, obviously the word that begins with f and rhymes with granny does raise an eyebrow.....)