In the past, even with their AUP (Acceptable usage policy) and Terms & conditions, they’ve always been very vague, with a passing mention of not downloading copyrighted stuff.
Even their traffic management stuff on their site, the speeds they limit you too aren’t too bad.
That said, they have adopted (apparently) a “three strikes and you’re out” approach, which still means you get warned first before anything happens (in theory anyway…dunno if they’ll move the goalposts on that one).
Could be worse. If it had been BT, they’d disconnect you as soon as look at you, LOL (I know this from my dialup days!).