"This plan won't stop copyright infringement and with a simple accusation could see you and your family disconnected from the internet - unable to engage in everyday activities like shopping and socialising," it [Lobby organisation The Open Rights Group] said.
Not to mention working, banking, studying, job searching, etc.
If you can punish an entire household for the illegal file-sharing activities of one of its members, then why wouldn't the households of all types of felons also be punished? The brother of the murderer, the sister of the rapist, the mother of the armed robber, the room-mate of the embezzler, they all deserve the same punishment, right?
The underlying idea behind this is to encourage us to spy on each other because there's just too many of us for Big Brother to keep track of.