I watched the first season of the British version, and it was hard to get that far.
I honestly had to turn on subtitles because I couldn't understand every other word that was said, plus they speak in slang words that I guess only the British use, so it made things kind of hard to follow.
But if you thought there was a good bit of nudity in the American version, there seemed to be a good bit more in the British version.
That's my 2cents
Overall, I think the American version is a better show, but it is probably because the characters are more well known to me, and I understand the dialog