This seems like a stupid stunt, but then again, the news reports caused me to notice the issue. I'm dismayed that the UK has allowed this kind of filtering scheme to be deployed with hardly a whimper of protest, at least as far as I heard over here. That success has emboldened censors in numerous western countries who want to deploy similar systems. I have the impression that the filter list that is running in the UK is fairly carefully managed such that most Internet users don't know its there. The only controversy that I've heard of was over that Scorpions album, which is obviously an edge case. The Australian filter list was leaked, and reports seem to indicate that it contains material that should not have been listed. Making matters worse, the Australian government has tried to censor the list.
I don't think goverments should filter the internet. If they insist, there is something to be said for doing it transparently.