It's because the Conservative Government want to be seen actively combating piracy. Right now the mpaa and riaa and the UK equivalents haven't seen through the this weak legislature. Once they will be even stronger laws to try and combat this. However our isp's don't want to do any of this willingly so they have be forced by the law to do it which sucks. I think it was more of a compromise between the government and some isp's. So in conclusion use a VPN.