Otherwise you could conduct interviews with people of the era? Maybe watch tv set in the 50s, those documentaries about the war and so on. They probably didn't swear too much on TV back then though!
then it would have to be "your a right bugger" or "chuff off" springs to mind. ******* was used but in the more fatherless way to a person out of wedlock then it was much frowned upon. There is loads more out there so come folk help him out