Issue is solved, kind of, flatmate is unhappy and moody but I just made myself clear I will not tolerate this or her other antisocial behaviour, and there was no gorund for discussion. Things have calmed down and it seems she has dropped the idea of using torrent or other things. I made clear that I have been there for 3 years with no problems so should she not be happy with those rules, she is wlecome to leave.
I also rang NowTV and they were very helpful and explained how to block unwanted websites moving forward.
Thank you again guys, I'm quite amazed at how reactive and helpful everyone seems to be on this m,essage board 😃